Test for patches included field

Adding a new field to a test report called "Patches Included". Such
information was requested by user organization and it seems rather
feasible to include now that multiple external services are supported.
For example, users can then list all the patches from e.g. Gerrit that
are included in the tested software build.
Added new field "Patches Included"

Added a field with purpose to list patches included in the software
build being tested. It is quite common use case for organizations to
track what they are testing by reporting the patch IDs, and now that we
can link to random services such as Gerrit this feature is quite
meaningful.
Last perf test update was on the wrong step

Previous increase in performance test was on the wrong step. Tests did
still pass though, but now they did not. So again random change in the
limits to get past the random failures in execution.
Test for CSV API shortcut

Adding support for delivering a list of IDs to issue summary and patches
included in CSV format from where they will be parsed and converted to
markup format. This makes integration to automation tools a bit easier.
Added CSV shortcut API for two fields

Since issue summary and patches included fields are often filled with a
list of IDs only, added a CSVish shortcut method with which API user
does not need to convert to markup format by himself, but just deliver a
comma separated list of IDs.
Test for default prefix for CSV shortcut API parameters

Going to add support for defining default prefixes for the two CSV
shortcut API parameters. The default is separate from the default in
external services config because often issues come from one service and
patches from another.
Implemented CSV API shortcut parameters

Added API parameters issue_summary_csv and patches_included_csv that
take a comma separated list of IDs, prepend the ones without a prefix
with a default prefix if defined, and converts to markup list format.

So, sending issue_summary_csv="1234,2345,5762" will turn to
* [[1234]]
* [[2345]]
* [[5762]]

or, if a default prefix is defined, to
* [[BZ#1234]]
* [[BZ#2345]]
* [[BZ#5762]]
Merge branch 'dev'