VS 2012 Config file changes

Qt Pro file causes compiler errors, quotes do not need to be escaped for
VS.

Filters added to gitignore
VS 2012 solution files

The .vcxproj.user file *needs to be edited* to add:

<QTDIR>C:\Qt\4.8.3</QTDIR>

to both build configs.

Havok paths need to be added in manually.