[dist] add (api) coverage to the README
[api] add a test for the status_history model

It was meant as finger training in coverage, but it actually found a nasty
bug I introduced in my refactoring
[api] move the matcher out of activexml

It has no coverage outside of test cases
[webui] test cases for comment post methods
[api] ignore indices files for coverage

They are config files really
[backend][api] drop BUILD_UNCHANGED event

 90% of our events are "build unchanged" and we have zero subscribers
add $BSConfig::workerpartitionservers

Currently evaluated in scheduler, should be read and transmitted
by the src server in the future.
[backend] delete no longer needed line
[backend][api] drop BUILD_UNCHANGED event

 90% of our events are "build unchanged" and we have zero subscribers
[api] fake issue servers using webmock

Fetching fate issues seems to be a stub ;(
[dist] update gem versions