helios: new method extension icon
fixed AIContext initialization
helios: removed commit button already present in the menu
better SUnit class comments
Helios: handle opening Helios in a popup window
Better logging of stack contexts (as in debugger).
amber-cli recompiled
Merge pull request #485 from herby/better-repl-stack-logging

Better repl stack logging
Improved class comments
helios: a few new icons
longer timeout for async sunit tests
Smalltalk class comment
helios: new arrow icons
- ErrorHandler class comment
- new ProgressHandler class
- helios: css improvements for the progress bars
- use the new progress collection enumaration in several places:
  - package commit
  - class recompilation
put back test.png
- Helios: progress bar improvements
- use the progress bars in various places
- fixed HLProgressBar collection iteration
- fixed HLToolModel error handling for remote environments
do not throw catched JS exceptions
helios changes:
- adds "Widget" to widget class names
- adds HLWidget >> openAsWidget