diff --git a/tipcalculator/package-lock.json b/tipcalculator/package-lock.json
index ea034d0..3a1e79e 100644
--- a/tipcalculator/package-lock.json
+++ b/tipcalculator/package-lock.json
@@ -879,6 +879,14 @@
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         "raw-body": "2.3.2",
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+      },
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+          "resolved": "https://registry.npmjs.org/qs/-/qs-6.5.1.tgz",
+          "integrity": "sha512-eRzhrN1WSINYCDCbrz796z37LOe3m5tmW7RQf6oBntukAG1nmovJvhnwHHRMAfeoItc1m2Hk02WER2aQ/iqs+A==",
+          "dev": true
+        }
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     "bonjour": {
@@ -1789,45 +1797,51 @@
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-      "integrity": "sha1-41xt/i1kt9ygpc1PIXgb4ymeB2w=",
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       "dev": true,
       "requires": {
-        "accepts": "1.3.4",
+        "accepts": "~1.3.4",
         "array-flatten": "1.1.1",
         "body-parser": "1.18.2",
         "content-disposition": "0.5.2",
-        "content-type": "1.0.4",
+        "content-type": "~1.0.4",
         "cookie": "0.3.1",
         "cookie-signature": "1.0.6",
         "debug": "2.6.9",
-        "depd": "1.1.1",
-        "encodeurl": "1.0.1",
-        "escape-html": "1.0.3",
-        "etag": "1.8.1",
+        "depd": "~1.1.1",
+        "encodeurl": "~1.0.1",
+        "escape-html": "~1.0.3",
+        "etag": "~1.8.1",
         "finalhandler": "1.1.0",
         "fresh": "0.5.2",
         "merge-descriptors": "1.0.1",
-        "methods": "1.1.2",
-        "on-finished": "2.3.0",
-        "parseurl": "1.3.2",
+        "methods": "~1.1.2",
+        "on-finished": "~2.3.0",
+        "parseurl": "~1.3.2",
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-        "proxy-addr": "2.0.2",
+        "proxy-addr": "~2.0.2",
         "qs": "6.5.1",
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         "serve-static": "1.13.1",
         "setprototypeof": "1.1.0",
-        "statuses": "1.3.1",
-        "type-is": "1.6.15",
+        "statuses": "~1.3.1",
+        "type-is": "~1.6.15",
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-        "vary": "1.1.2"
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-          "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI=",
+          "integrity": "sha512-PCVAQswWemu6UdxsDFFX/+gVeYqKAod3D3UVm91jHwynguOwAvYPhx8nNlM++NqRcK6CxxpUafjmhIdKiHibqg==",
+          "dev": true
+        },
+        "qs": {
+          "version": "6.5.1",
+          "resolved": "https://registry.npmjs.org/qs/-/qs-6.5.1.tgz",
+          "integrity": "sha512-eRzhrN1WSINYCDCbrz796z37LOe3m5tmW7RQf6oBntukAG1nmovJvhnwHHRMAfeoItc1m2Hk02WER2aQ/iqs+A==",
           "dev": true
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@@ -1985,7 +1999,8 @@
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@@ -2036,7 +2051,8 @@
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@@ -2051,6 +2067,7 @@
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@@ -2059,6 +2076,7 @@
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           "dev": true,
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@@ -2067,6 +2085,7 @@
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@@ -2075,7 +2094,8 @@
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@@ -2092,12 +2112,14 @@
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@@ -2105,22 +2127,26 @@
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@@ -2160,7 +2186,8 @@
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@@ -2192,7 +2219,8 @@
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@@ -2214,12 +2242,14 @@
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+          "dev": true,
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           "version": "1.0.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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@@ -2275,6 +2305,7 @@
           "version": "7.1.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -2287,7 +2318,8 @@
         "graceful-fs": {
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-          "dev": true
+          "dev": true,
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           "version": "1.0.5",
@@ -2315,6 +2347,7 @@
           "version": "3.1.3",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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             "cryptiles": "2.0.5",
@@ -2325,7 +2358,8 @@
         "hoek": {
           "version": "2.16.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "http-signature": {
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@@ -2342,6 +2376,7 @@
           "version": "1.0.6",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "once": "1.4.0",
             "wrappy": "1.0.2"
@@ -2350,7 +2385,8 @@
         "inherits": {
           "version": "2.0.3",
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-          "dev": true
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@@ -2362,6 +2398,7 @@
           "version": "1.0.0",
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           "dev": true,
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@@ -2375,7 +2412,8 @@
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           "version": "1.0.0",
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@@ -2448,12 +2486,14 @@
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+          "optional": true
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           "bundled": true,
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@@ -2462,6 +2502,7 @@
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           "bundled": true,
           "dev": true,
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@@ -2469,12 +2510,14 @@
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+          "optional": true
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           "version": "0.5.1",
           "bundled": true,
           "dev": true,
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@@ -2529,7 +2572,8 @@
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@@ -2547,6 +2591,7 @@
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           "bundled": true,
           "dev": true,
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@@ -2576,7 +2621,8 @@
         "path-is-absolute": {
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@@ -2587,16 +2633,11 @@
         "process-nextick-args": {
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-          "bundled": true,
           "dev": true,
           "optional": true
         },
-        "qs": {
-          "version": "6.4.0",
+        "punycode": {
+          "version": "1.4.1",
           "bundled": true,
           "dev": true,
           "optional": true
@@ -2625,6 +2666,7 @@
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           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -2669,6 +2711,7 @@
           "version": "2.6.1",
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@@ -2676,7 +2719,8 @@
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@@ -2700,6 +2744,7 @@
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@@ -2729,24 +2774,26 @@
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         "string-width": {
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
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             "strip-ansi": "3.0.1"
           }
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+        "string_decoder": {
+          "version": "1.0.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
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@@ -2757,6 +2804,7 @@
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@@ -2771,6 +2819,7 @@
           "version": "2.2.1",
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           "dev": true,
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@@ -2826,7 +2875,8 @@
         "util-deprecate": {
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@@ -2855,7 +2905,8 @@
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-          "dev": true
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@@ -4367,10 +4418,11 @@
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-      "integrity": "sha512-eRzhrN1WSINYCDCbrz796z37LOe3m5tmW7RQf6oBntukAG1nmovJvhnwHHRMAfeoItc1m2Hk02WER2aQ/iqs+A==",
-      "dev": true
+      "version": "6.4.0",
+      "resolved": "https://registry.npmjs.org/qs/-/qs-6.4.0.tgz",
+      "integrity": "sha512-Qs6dfgR5OksK/PSxl1kGxiZgEQe8RqJMB9wZqVlKQfU+zzV+HY77pWJnoJENACKDQByWdpr8ZPIh1TBi4lpiSQ==",
+      "dev": true,
+      "optional": true
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@@ -4957,15 +5009,6 @@
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-      "dev": true,
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@@ -5005,6 +5048,15 @@
         }
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+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
+      "integrity": "sha512-4AH6Z5fzNNBcH+6XDMfA/BTt87skxqJlO0lAh3Dker5zThcAxG6mKz+iGu308UKoPPQ8Dcqx/4JhujzltRa+hQ==",
+      "dev": true,
+      "requires": {
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+      }
+    },
     "strip-ansi": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",