[api] update channel list immediatly after importing a new _channel file
[webui] Reintroduce CSRF protection for the webui. AUA!
[backend] bring reposerver's getbuildinfo in sync with scheduler

The prereqs were handled differently: the scheduler only uses them
when doing build expansion.
add view=cpioheaders as option to binarylist

So that coolo can easily mirror the headers from Factoy's full tree
[backend] support ncc specific distro targets
[backend] support ncc distrotarget listings as part of productrepositories
[backend] rename ncc element to generic distrotarget
[backend] allow specification of zypp alias and names for update repositories
[backend] error out on incomplete zypp specification
[api] Set api_version to 2.5.50
[backend] call build script with --statistics also when using vm-type emulator

Reading /proc/meminfo every five seconds should not be too much work even
for an emulator, and the statistics are still useful there.