Add handling of meta aka command key on OSX
fixed: Crash in Pictures caused by PR2890 (fixes #14500)
Add support for meta/cmd to keyboard.xml parsing
[release] version bump to 13.0 alpha7 as we start new merge window.
Merge pull request #2998 from arnova/pictures_crash_fix

fixed: Crash in GUIPicturesWindow caused by PR2890 (fixes #14500)
Merge pull request #3019 from MartijnKaijser/august

[release] version bump to 13.0 alpha7 as we start new merge window.
Merge pull request #2985 from jhsrennie/osx-cmd

Add handling of meta aka command key on OSX