removed old folder (docs are migrated to github wiki)
included github-wiki as a git submodule
encapsulate routing constraint for locales

this makes the routing constraint accessible by apps embedding iQvoc.
It should also fix the bug where Rails complains about routes getting
defined multiple times when iQvoc apps add their own routes by
appending them to Iqvoc.localized_routes. This is gone now!
deprecate Iqvoc.localized_routes
fix private wiki repo url

/cc @mjansing
use Rails 4 style folder names for tests
remove legacy travis scripts [skip ci]
merge master, add doc