merge -r 130399-131510 skinning-21 -> viewer-2.0.0-3

DEV-11254 DEV-11254 DEV-2003: DEV-21567 DEV-37301 EXT-104 EXT-138 EXT-217 EXT-256 EXT-259 EXT-259 EXT-328 EXT-348 EXT-386 EXT-399 EXT-403 EXT-460 EXT-492 EXT-492 EXT-531 EXT-537 EXT-684

improved text editor (handles multiple fonts simultaneously as well as inline widgets)