added pegjs dev dependency
first version of formula parser
- added formula grammar
- added peg task to generate parser in angular module
- added dependency to grunt-peg
fixed jshint warnings
renamed formulaGrammar.js to formulaParser.js
added formula-editor and formula factories
new formula grammar (added functions and equations)
- changed module name of formula parser
- updated formula parser
added a new parser for 2nd grammar
improved formula class
some fixes and improvements
added missing files
added compile functions to formula
updated grammars and parsers
fixed syntax
formula deferred compilation
improved grammar for excel and formula
added console output to test
fixed wrong precedence of comparison
fixed excel grammar bug
fixed undefined error
Merge branch 'report-editor', remote-tracking branch 'origin' into formula-editor
Merge branch 'report-editor' of github.com:28msec/nolap-report-editor into formula-editor

Conflicts:
	Gruntfile.js
	dist/nolap-report-editor.js
	test/report.test.js
added first version of businessRules directive
added getRules function to report directive
added concept filter to listRules functions
fixed jshint failures
Merge branch 'report-editor' of https://github.com/28msec/nolap-report-editor into formula-editor

Conflicts:
	dist/nolap-report-editor.js
	src/editor.js