AmberCli: recategorize methods
Repl: allow identifiers whith one single character
Repl: change error handling to not print a complete stacktrace but only the error description (fixes #671)
Repl: recompile
- Adds Node >> isReferenced to avoid unneeded aliasing
- Better implementation of VariableNode >> isImmutable
- Adds IRASTTranslator >> visitOrAlias: and also alias inside BlockSequenceNode,
  fixing issue #704

- Recompiles all JS files
- Helios: Use the environment's doIt receiver for doIts.
Better formatting of Counter >> renderOn:
Merge branch 'master' of github.com:amber-smalltalk/amber
Merge pull request #708 from mkroehnert/cli

Update Repl to not print complete stacktraces on undefined variables
Speed up Helios reference browser
Fixes issue with non aliased receivers of inlined sends as shown by
@Herby here: https://github.com/amber-smalltalk/amber/commit/7211ee840888d7925ccaee97ea6d6b422c1e06e0#diff-0d0ec181feb528922777f798621b1aa2L1173
Merge branch 'master' of github.com:amber-smalltalk/amber
use 'custom' instead of 'proprietary'
Update the CHANGELOG to use the third person.
Fix a committed by mistake change in boot.js
Merge branch 'references' of https://github.com/rcsimm/amber into rcsimm-references

Conflicts:
	js/Helios-References.js
Cosmetic changes:
- Moved HLListItemNotFound to 'Helios-Exceptions'
- Adds class comments to Helios exceptions
- Reformatting of some HLListWidget methods
change locating the bower_components directory

The bower_components directory is usually found
in the root directory of the application.
However, it is not necessarily found in the Amber
directory.

Usecase:

1. create new project
2. run 'bower init'
3. run 'bower install --save amber#master' // use master for the requirejs stuff
4. create index.html and load Amber via
       <script type='text/javascript' src='bower_components/amber/support/amber.js'></script>
    <script type='text/javascript' src='bower_components/amber/support/requirejs/require.min.js'></script>

5. load index.html via a file:/// url

Without this change all bower components will get
searched in file:///project_dir/bower_components/amber/bower_components/.
With this change dependent files are loaded correctly.
Fixing publishing part of release script.

... to the best of my knowledge.
Moving things out of bin.