[api] try to avoid slow DB with high amount of delayed jobs
[backend] BSCando: unify to use linux32 on most platforms
[backend] aarch64 workers can also build 32bit arm
[api] Do not enable enforce_project_keys by default for new installations
[webui] basic fixes for dealing with remote urls when adding source files

- git support is back
- filename handling fixed
[api] use a default queue for delayed jobs
[api] speed up package indexing for non-products

solves also a crash in delayed job when package got removed again
[api] fix crash when removing a package under release tracking
[backend] fix repo deletion for repos with split debug
[backend] buildinfo post: use recipe name from cpio archive
[webui] add an alias to the project/monitor route
[webui] don't crash on accepting broken sources
[api] restore default for maintenance ID template again
[webui] add one more named route
[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