Resolved Some MSI Issues as well as a possible resolution for Intellisense/Move tag issues

Intellisense/Move Tag Issues Resolved:
- #65 msbuild community tasks intellisense
- #37 XML IntelliSense doesn't work after installing MSBuildCommunityTasks 1.4.0.56

MSI Issues resolved:
- #78 MSI adds duplicate entry of XSD reference to Microsoft.Build.xsd on repair
- #77 MSI does not remove reference to XSD in Microsoft.Build.xsd on uninstall
- #75 MSI lacks integration for Visual Studio 2012
- #50 MSI Installer Out of Date
- #8 Wrong version on installer.