added blocks from trikDemos, renamed and grouped blocks in metamodel
added IR and sonar sensor blocks, fixed some issues
support for variable init block, to be debugged
- fixed variable initialization block
- fixed evaluation of booleans
common NXT blocks restored
moved all sensor waiting blocks to interpreterBase, restored NXT blocks
- common sensor blocks for TRIK
- fixes to WaitForGyroscope and WaitForAccelerometer appearance
some TRIK-specific blocks