Update unmovable after it is changed. Add unmovable block CSS class. Don't show highlight on select for unmovable blocks. Apply Disabled pattern to undraggable blocks (until there's a better visual effect)
Whitespace style consistency
change to graying out
Cleaner way of handling immovable blocks
fix error handling in reconnector
Use null instead of noop function, fix case moving movable block with no parent above unmovable block, set gray color and update once
Merge pull request #52 from code-dot-org/unmovable_fixes

Unmovable blocks: make gray, don't highlight on click, handle dragging movable block above unmovable blocks