add macos-brew packages / remove duplicate qt
Merge pull request #10 from D-Alex/master

add macos-brew packages / remove duplicate qt
move telemetry into master

Alex would rather replace this implementation by a rock-webapp based one.
move the 'next' packages into 'stable'
prepare synchronize 'stable' with rock1408

'next' disappears in this release. It is now an alias to 'stable'
replace the deprecated ROCK_FLAVOR variable by ROCK_BRANCH