[api] find right container for unset owners.

If a package has no owner yet, osc is doing a container search with explicit undefined filter.
This has to find the package and not the project container for a binary.
[backend] fix syntax
[dist] add inst-source-utils as build requires, we test suse style repos now
[api] test HTML in the API
[api] move webui as into api engine
[webui] rename project to WebuiProject

Makes it easier to grep for it
[api] move the rails script into the rails4 bin/ folder

My IDE won't detect the project as rails4 otherwise
[webui] remove the first webui model: StatusMessage
[webui] remove first webui/ controller in the API

It's just one AR call now
[webui] merge Webui::Role into Role

It was just a namespace anyway
[webui] fetch latestupdates right from the database instead of API hop

This looses caching for now, but we can cache better in the API anyway
[webui] use the package model directly to save roles

Fortunately the models already check for permissions
[webui] calculate the worker status directly in the API
[webui] fix test cases

- take out some more caching (for now, to be readded in the models where
  it's sane)
- fix flags validation
- redo the travis split
- use truncation for database cleaner

(and due to rubymine insisting replace "" with '' where no escaping is
necessary)
[api] retire webui/relationships controller
[webui] calculate project#list_all right in the webui
[webui] move the rest of the webui/projects_controller
[webui] create the interconnect directly
[webui] remove the usage of find_cached
[api] make use memcached in test environment

but make sure not to reuse old caches