added : the excel keyboard
Merge remote-tracking branch 'origin/V3' into V3

Conflicts:
	CivikeyWebsite/Content/files/keyboards/Excel.xml
Improving the Features icons' margins
Linking the download buttons on the home page
Fixing google analytics
Added : Support page
Added : Support page
Merge remote-tracking branch 'origin/library-import' into V3 + adding desc on the upload page

Conflicts:
	CivikeyWebsite/CivikeyWebsite.csproj
	CivikeyWebsite/Content/styles/site.less
	CivikeyWebsite/Controllers/HomeController.cs
	CivikeyWebsite/Views/Home/Keyboards.cshtml
	CivikeyWebsite/packages.config
Keyboard submission destination is now configurable through the web.config file
Fixing the footer
updating the downloadable files (keyboards & application)
add Facebook meta tags
Merge remote-tracking branch 'origin/V3' into V3
Modifying the image facebook meta tag
Add some files to gitignore