Update gen_templates.py to limit allowed characters in plugin description.

E.g. apostrophes cause plugin loading to fail, see http://stackoverflow.com/questions/17304860/firebreath-plugin-not-loading-in-ie-10
Merge pull request #114 from mrts/patch-1

Limit allowed characters in plugin name and description
Add Visual Studio 2013 support
Merge pull request #115 from mrts/vs2013-support

Add Visual Studio 2013 support
Pick up extra .rc files from Win/
Merge remote-tracking branch 'upstream/master'