chore(refactor): Remove arrow dependency from the project

app/api/helpers/humanize_helper.py

@@ -0,0 +1,11 @@
+from datetime import datetime
+
+import humanize
+import pytz
+
+
+def humanize_helper(time):
+    """Returns time passed from now in a human readable duration"""
+
+    return humanize.naturaldelta(datetime.now(pytz.utc) 
+                - time.astimezone(pytz.utc)) + ' ago'

app/templates/flask_ext/jinja/filters.py

@@ -1,6 +1,7 @@
-import arrow
 from forex_python.converter import CurrencyCodes
 
+from app.api.helpers.humanize_helper import humanize_helper
+
 
 def init_filters(app):
     @app.template_filter('currency_symbol')
@@ -20,5 +21,4 @@ def simple_datetime_display(date):
     def humanize_filter(time):
         if not time:
             return "N/A"
-        # TODO(Areeb): Only usage of arrow. Remove
-        return arrow.get(time).humanize()
+        return humanize_helper(time)

tests/all/integration/api/helpers/test_humanize_helper.py

@@ -0,0 +1,16 @@
+import datetime
+
+from app.api.helpers.humanize_helper import humanize_helper
+from tests.factories.order import OrderFactory
+
+
+class TestHumanizeHelper(OpenEventTestCase): 
+    def test_humanize_helper(self):
+        """Method to test humanization of order creation time"""
+
+        with self.app.test_request_context():
+            test_order = OrderFactory(created_at=datetime.datetime.now() 
+                                        - datetime.timedelta(days=10))
+            actual_response = humanize_helper(test_order.created_at)
+            expected_response = '10 days ago'
+            self.assertEqual(actual_response, expected_response)