Fix #1157

This is a more general fix than ceylon/ceylon.formatter@20ec4bd; it
should also work for other nodes that have legitimate indentBefore.
fix crash in rename
use import alias in linked mode proposal
fix an npe
squash npe
Fix #1155.
remove unnecessary clean, now that the related bug has been fix in the
compiler
quieter label
much better details label in open declaration dialog
less noisy labels
Cleanup mirrors from bindings and lookup environment (for #1150)
Now add a clean binding caching to recover the initial speed
Some minor code fixes because of the change to the CMR API (see ceylon/ceylon-module-resolver#109)
Support Inner classes in secondary Java types
Fix #1159 by filtering out unshared top-levels in external modules
Fix #1138
Fix #1160
#671 : Use the new CEYLON_CODE when both JVM and JS backends are enabled
final on control referenced in Observer
Line and Line Breaks Tab