[FEATURE] Determine gerritProject from gitWebUrl if not given

When a project has no gerritProject set, the script tries to
use the path from the gitWebUrl instead.
Merge branch 'guess-gerritproject'
[TASK] Merge commit '489ebd3013a9c3315de18a427cf2cf53941c4232'

* commit '489ebd3013a9c3315de18a427cf2cf53941c4232': (77 commits)
  [TASK] Add some more alias issues
  [FEATURE] Added 'components' column to output
  [TASK] Improve the button ordering
  [BUGFIX] Default to work online
  [FEATURE] Added perReleaseOutput option
  [FEATURE] Only add valid release to the list of 'planned'
  [BUGFIX] branchToRelease accessing wrong array
  [TASK] Fix PHP 5.3 warnings
  [TASK] Ignore issue 41344
  [CLEANUP] Fixing indention
  [TASK] Added 43540 and cleaned up list of ignored issues
  [TASK] strip subject at 80 chars
  [TASK] Removed support for 'backports' branches
  [BUGFIX] Added support for 'ReleaseS'
  [FEATURE] Identify new unique features for each branch
  [FEATURE] Added  setting for being able to test it offline
  [TASK] Abandon an issue for 4.7
  [DOCUMENTATION] New repository URL
  [BUGFIX] Incorrect calculation of releaseName
  [BUGFIX] Fixed release detection in submodules
  ...

Conflicts:
	check-changes.php
[TASK] Merge commit '8ad251c47ddea4bf56e5b963e7da8520699e4699'

* commit '8ad251c47ddea4bf56e5b963e7da8520699e4699':
  [TASK] prepare to include Flow 2.1 release
  [FEATURE] support for TYPO3 Neos
  [TASK] update flow-script to be the version from ci.typo3.robertlemke.net
  [FEATURE] support for changes with no Issue ID
  [BUGFIX] make script not throw any PHP warnings while running
[TASK] Add Flow hint to README.md
[TASK] Fix Gerrit links, some tweaks
[TASK] Add some changes to ignore list for Flow packages
[TASK] Add TYPO3.Eel to flow-base-dist.php
[TASK] Add changes to ignore list for Flow packages

This cleans up the list of open changes so that at the time of writing
no false positives are left.
[TASK] Provide review links for changes without issue id
[TASK] Added class loader change (#42961) to ignore for 2.1 and 2.0
[TASK] Remove debugging output
[TASK] Add #50118 as ignored for Flow 2.1