Treat metapackage depends as not auto installed

Core/ModuleInstaller.cs

@@ -215,7 +215,7 @@ public void InstallList(ICollection<CkanModule> modules, RelationshipResolverOpt
                     User.RaiseProgress(String.Format("Installing mod \"{0}\"", modsToInstall[i]),
                                          percent_complete);
 
-                    Install(modsToInstall[i], resolver.ReasonFor(modsToInstall[i]) is SelectionReason.Depends, registry_manager.registry);
+                    Install(modsToInstall[i], resolver.IsAutoInstalled(modsToInstall[i]), registry_manager.registry);
                 }
 
                 User.RaiseProgress("Updating registry", 70);

Core/Relationships/RelationshipResolver.cs

@@ -639,6 +639,21 @@ public SelectionReason ReasonFor(CkanModule mod)
 
             return reasons[mod];
         }
+
+        /// <summary>
+        /// Indicates whether a module should be considered auto-installed in this change set.
+        /// A mod is auto-installed if it is in the list because it's a dependency
+        /// and if its depending mod is not a metpaackage.
+        /// </summary>
+        /// <param name="mod">Module to check</param>
+        /// <returns>
+        /// true if auto-installed, false otherwise
+        /// </returns>
+        public bool IsAutoInstalled(CkanModule mod)
+        {
+            var reason = ReasonFor(mod);
+            return reason is SelectionReason.Depends && !reason.Parent.IsMetapackage;
+        }
     }
 
     /// <summary>

GUI/Controls/ThemedTabControl.cs

@@ -1,3 +1,4 @@
+using System;
 using System.Drawing;
 using System.Windows.Forms;
 
@@ -21,11 +22,19 @@ protected override void OnDrawItem(DrawItemEventArgs e)
             bgRect.Inflate(-2, -1);
             bgRect.Offset(0, 1);
             e.Graphics.FillRectangle(new SolidBrush(BackColor), bgRect);
-            // Text
-            var tabPage = TabPages[e.Index];
-            Rectangle rect = e.Bounds;
-            TextRenderer.DrawText(e.Graphics, tabPage.Text, tabPage.Font,
-                rect, tabPage.ForeColor);
+            // e.Index can be invalid (!!), so we need try/catch
+            try
+            {
+                // Text
+                var tabPage = TabPages[e.Index];
+                Rectangle rect = e.Bounds;
+                TextRenderer.DrawText(e.Graphics, tabPage.Text, tabPage.Font,
+                    rect, tabPage.ForeColor);
+            }
+            catch (ArgumentOutOfRangeException)
+            {
+                // No such tab page, oh well
+            }
             // Alert event subscribers
             base.OnDrawItem(e);
         }