Enable second shelly cloud for hacken.in-master #355

Add new domains and a second host config to Cloudfile (master + release)
Enable deployment with both mysql & postgres gem #355

Shellycloud deployment will go postal if there is no 'pg' gem in our
Gemfile, so we'll switch to postgres in our live environment and leave
the development environment with MySQL until #364 is resolved.
Github Link fixed
Refactored sidebar
Sidebar always visible on big screens
Simplified and internationalized the iCal pop-up
Further structured the popup
Tabs for the two kinds of URLs

This will remove the need for custom JavaScript
Tweaking the calendar
only_path: false is the default
Extracted method for the iCal link generation
Remove unnecessary variables
Bugfix: Somewhere the iCal links got mixed up
Rest of the translation of the i18n
Adjusted iCal page to unify naming
Remove loves/hates text boxes
Merge pull request #374 from hacken-in/issues/355

Zombie-PR of 369
Remove TODO comment that was done – thanks @bitboxer
Merge pull request #342 from hacken-in/sidebar

General Layout
add loading of calendar entries #341