amberc.js: add more documentation
grunt-amberc: process verbose option
amberc.js: compiled_categories entry in configuration is not needed anymore
amberc.js: remove second callback parameter in AmberC.collect_st_files()
amberc.js: generate the JS file in the same directory than the .st file
amberc.js: adjust defaults.compiled variable to contain the actual path to the generated .js files
amberc.js: add support for specifying an ouput directory for the generated .js files
grunt-amberc: remove directory changing hack

For one this was ugly and it was discouraged by grunt.js
grunt-amberc: rename target_dir to output_dir
amberc.js: minification implies deploy mode
amberc.js: minify deploy files, not debug files
amberc.js: check creation of deploy files if in deploy mode
amberc.js: use correct program file for minification
amberc.js: use deploy sources to generate executable in deploy mode
amberc: add -D flag to specify output_dir directory
fixed Number >> isImmutable
Merge pull request #476 from mkroehnert/compiler

Compiler updates
- better documentation widget
- inspectors are refreshed automatically
Helios: Removed old inspector code related to refresh
Helios: Removed unused showCommentToggled announcement handling