modified carousel to be the homepage and made the changes to reflect the WET tabs

changed the splash page links to work with the repo
Build: Run Autoprefixer on unminified CSS

Fixes gh-505
Merge pull request #540 from wet-boew/ns-fix-505

Build: Run Autoprefixer on unminified CSS
Merge pull request #539 from shawnthompson/homepage-carousel

Homepage carousel
Added theme documentation
Merge pull request #541 from pjackson28/adddocs

Added theme documentation
Prevents the GH token from being exposed on submodule update
Change English tab to French Languette
Merge pull request #542 from MRicher/HomeTab

Change English tab to French Labguette