Added exception handling for unhandled exceptions

Any runtime exceptions that occur in the Editor will be caught via
method "PGECrashHandler::crashByUnhandledException()".

A message box will then be shown to the user telling them what error
happened and a link to the forum.
Update .gitignore
Delete Makefile.pge_editor
Removing of some trash
Add testing of dev_console for editor - unhandled exception
Merge pull request #151 from Wohlhabend-Networks/master

Repo Sync