[backend] make getsslcert also work the first time it is called
[backend] don't commit certs when the signkey is "1"
[backend] switch to RSA@2048 for new signing keys. WARNING: sign must be at least 2.1.5.1 for this to work
[backend] tweak sslcert retrival again to bring to more in line with the signkey handling
[backend] fix spurious next statement in signer
[backend] don't retry signing if the cpio.rsasign is bad
[backend] Fix error message in product converter

ERROR: No such archset HASH(0x28d5080) is not a useful error message.
[backend] do always use package release number as product provides. This basically makes the usage
          of explicit product release numbers not possible anymore, but it seems every product just
          worked around this anyway.
[backend] refactor so that we no longer do multiple commits for key manipulations
[backend] bs_signer: refactor signing code, no functual changes
[backend] add $BSConfig::dispatch_constraint hook (i.e. hack) for hard constraints
[api][webui] support local webui's speaking to a remote api anonymously using /public/configuration route.
make it possible to exclude specific sandboxes and hostlabels in constraints
[backend] run build statistics only in XEN or KVM virtualization to avoid the return of invalid data
[webui] simply viewer for build statistics (fixes broken view of _statistics file)
[api] avoid same named elements in _statistics XML structure
[webui] - patchinfo-editor
- fixed errormessage after adding a wrong issue-format
- added more checks for adding issues to patchinfos
- added more testcases for adding issues
[webui] fix configuration URI
[api] fix _statistics fixture for new <times> element structure
[webui] missed a spot for constraints change