Lots of smaller mobile fixes

* region can be deactivated in activeadmin
* smaller border around page content
* logo in top bar now with better spacing
* after signup is the map, not the profile
* sets the region in session when choosing one
Move all "Secrets" into secrets.yml (closes #445)
Merge pull request #453 from hacken-in/consolidate-secrets

Move all "Secrets" into secrets.yml (closes #445)
Merge pull request #451 from hacken-in/small-dropdown-fixes

Lots of smaller mobile fixes
Adds sitemap.xml
Merge pull request #456 from robinboening/feature/sitemap

Adds sitemap.xml
master, please deploy :wink:
Added ahoy for analytics
Weeks should start on Monday
Dashboard: Added graph to display page visits
Remove `group_by_day` because it is already defined
Track iCal Exports
Removed Google Analytics