[dist] sync up spec file with OBS

taken from https://build.opensuse.org/package/revisions/OBS:Server:Unstable/obs-server
from version 208
[dist] update gem versions - finally a DJ update is out
[webui][api] Introduce comments for projects, package and requests in the API and display them in the UI
[webui] Comments now expand and collapse
[api] Testing and validation for comments
[api][webui] ran migrations and fixed routes for comments in request
[webui] removed package file count. Was a test and now unnecessary
[webui][api] implemented feedback received on PR about exception handling, AR calls and other tid-bits
[webui] refactored child comment reply links & display
[webui][api] refactoring to make the code more object oriented
[webui][api] working on POST calls (WIP)