data import: use new import path after repo cleanup.
updating README aufter repo clean-up.
adding license information.
re-activating travis.
Gemfile: switching protocol from ssh to git for travis compatibility.
travis: install libicu-dev dependency.

travis build lifecycle:
http://about.travis-ci.org/docs/user/build-configuration/
travis: first run db:test:prepare in order to make sure the db is empty after running the migrations.

Actually, at the moment, the migrations appear to create the corporations_parent group.
If the database is filled initially, the database cleaner won't clean it, which is expected.
We should make sure the migrations do not create groups. The migrations are only allowed to modify data when changing the schema.
travis: adding status images.
adding rubydoc.info documentation.
adding code climate index.

https://codeclimate.com/github/fiedl/wingolfsplattform
adding version image using badge.fury.io.
adding gemnasium badge in README to watch gem dependency status.
adding test coverage with coveralls.io.
fixing red '-1' spec.

https://trello.com/c/0RDP04wo/454-fix-userpagespec-1-but-was-changed-by-0
fix: the imprint should be readable by anyone, even for users that are not logged in.