Added compare.html

- General page layout
- Some handlebars templates
Added handlebars helper for making select elements
fixed some template stuff
added .center style
added default option to the selector
implemented some javascript logic
added link to the Compare Teams page
added link to the homepage
added the footer style
added comparison function for the selected teams
added .tern-project to .gitignore
Merge pull request #1 from smo93/teamComparison

Team comparison