Clean up nav bar code.
Fix log-in page to be responsive.
Fix new user reg and edit user to fit responsive.
Make all user sign up, sign in, and edit forms resize on page sizes small, medium, and large.
Good enough for responsive menu link colors.
Merge pull request #71 from GeneChatham/grouppage

Join a Group Modal closes upon submit.
User show page now responsive.
Group show page now responsive.
Merge master into responsive branch.
Center profile pic on mobile.
Merge pull request #72 from GeneChatham/responsive

Responsive - Finished basics of making the site look decent on mobile.  Definitely needs some tweaks, but the overall functionality is good.
styling changes to group members list on group show page.
add link to users from group page.