[api] remove tons of code from the status/bsrequest route

It never really worked for tons of cases to check the file dependencies
within the build service. So now osc downloads the build results and does
a local check. Much more reliable
[backend] support for dumpstate and dropbadhosts in bs_dispatch
[backend] allow to disable syncing of kiwi trees in BSConfig
[backend] only calculate worker/buildcode state every 20 seconds
[api] remove unused variable to please code quality check
[backend] tweak metacache merging a bit
[backend] fix typo in signer flavor calculation
[api] fix SQL escaping of request collection views
[webui] Expose requests as json and removing the enforcement of OBS setup for admins
[webui] Move sponsors and feeds into config/options.yml
[webui] Fix the test suite
[webui] Remove traces of the interconnect workflow in the test suite
[api] fix detection of running release requests when packages exist with the same name as prefix (bnc#811449)
[api] fix loading of ruby ldap module
[webui] Fix password/account changing