GDS-1276
Gravity: extract selector check in separate public method for external use
GDS-1277
Merge branch 'master' of ssh://github.com/graniteds/graniteds
GDS-1270
Merge branch 'master' of ssh://github.com/graniteds/graniteds
GDS-1278
GDS-1276
GDS-1276
GDS-1276
GDS-1275
GDS-1280
GDS-1271
Merge branch 'master' of ssh://github.com/graniteds/graniteds