[api] report also operation on binary release search results
[api] support binary release search for operation

and fix xpath syntax for disturl and supportstatus
[api] run some delayed jobs in special queues

* bug issue tracker job runs in extra queue to avoid that an external slow
  bugzilla server is slowin down processing all jobs
* binary tracker is doing heavy SQL load, so limit it to one job
[backend] fix media to medium attribute for product pool repos
[api] fix indenting the xml results of searches

Also, speed it up. Before, it rendered xml, to parse it, to render it again.
[api] do not crash on missing build time
[backend] allow to build 32bit big endian ppc on 64bit little endian host
[api] another place to avoid a crash when getting no build time
[api] store and render medium for binary tracking
[api] fix date of migration
[api] move binary release parser to proper model
[backend] support deletion of notificationpayload data
[backend] findfile: do service file mapping before checking for specific files

Found by e9925248, thanks!
[backend] log notification payload creation
[backend] Remove useless "|| ''"

Signed-off-by: Jan Blunck <jblunck@infradead.org>
[backend] Add support for *.livebuild projects

This adds support for Debian live-build 4.x based image builds. It requires
a build version with livebuild support.

Signed-off-by: Jan Blunck <jblunck@infradead.org>
[backend] Make livebuild type known to bs_repserver

This fixes the following error when doing osc local builds:
remote error: unknown repository type livebuild

Signed-off-by: Jan Blunck <jblunck@infradead.org>
[dist] require current build script for livebuild support

Signed-off-by: Jan Blunck <jblunck@infradead.org>