cleanup, add MyPackages tab, fix multiple project folder preferences, select main grid at start,

Author: unitycoder

UnityLauncher/App.config

@@ -24,6 +24,12 @@
             <setting name="minimizeToTaskbar" serializeAs="String">
                 <value>True</value>
             </setting>
+            <setting name="packageFolders" serializeAs="Xml">
+                <value>
+                    <ArrayOfString xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                        xmlns:xsd="http://www.w3.org/2001/XMLSchema" />
+                </value>
+            </setting>
         </UnityLauncher.Properties.Settings>
     </userSettings>
 </configuration>