i18n: add greek language
Merge pull request #641 from igorlima/develop

fix grunt version, as grunt 0.4 requires non-trivial code changes
i18n: greek language update

Added month names nominative and genitive handling. The rule is that if a day
number (D) exists in the format before MMMM then genitive is used or else we
use nominative.

examples:
"Do MMMM YYYY"       should be like "19η Φεβρουαρίου 2013"
"dddd, DD MMMM YYYY" should be like "Τρίτη, 19 Φεβρουαρίου 2013"
"MMMM YYYY"          should be like "Φεβρουάριος 2013"
"dddd, MMMM YYYY"    should be like "Τρίτη, Φεβρουαρίος 2013"
Rename grunt.js to Gruntfile.js
import project metadata into the grunt config
upgrade grunt from 0.3 to 0.4 (changed the test and lint plugin)
update jshint plugin
Fix error from jshint: Missing space after 'function'
Remove nodeunit core task. There is the grunt-contrib-nodeunit plugin instead of it.
Add grunt-contrib-concat plugin
Merge pull request #640 from mehiel/feature/el-lang

i18n: add greek language
add the grunt-contrib-uglify plugin
Update core task to grunt plugin: min task →  grunt-contrib-uglify plugin
fix concatlang taks
Add concatlang in release task
fix minlang task
fix minwithcomments task
fix zone and zones tasks
Add minwithcomments and minlang into release tasks
Fix jshint errors