[backend] also track id/version from the updateinfo
[api] fix migration dates
[api] updateinfo id tracking via the backend
[api] filter released binary results by medium
[api] speed up the released binary search a bit

using a hash to cache product list based on location. It does not cache between
searches yet. So there is more potential, but would need data invalidaten then.
[backend] allow to disable dropping of ftp trees for 13.2/sle12 medias
[backend] fix worker not collection build results for arch linux
[backend] also use tail_logfile when checking for bad workers
[dist] raise default for memory usage of kvm hosts.

256M is not enough anymore for standard initrd's...
[dist] create an initrd also when no LVM is used
[api] fix medium name on product parsing
[api] list product names in binary releaese updates explicit
[api] fix updateinfo counter
[api] support search of binaries on specific products
[doc] document the binary release search output a bit
[ci] binary_released schema does not exist in backend
[backend] adapt to newer appstream standard

maximize version, join applications/components
[backend] don't try to rsasign aggregates

This is for bad followup jobs that created .rsasign files. The
signer already ignored those, but aggregating the result led to
broken jobs.
[backend] fix verifymd5 for frozen links to post-servicerun sources
[webui][api] Test the attrib policy