Rename dictionary file javascript-mode -> js-mode

'javascript-mode' is only alias of 'js-mode' from Emacs23.2.
Add web-mode to ac-modes
Merge pull request #332 from auto-complete/rename-javascript-dictionary

Rename dictionary file javascript-mode -> js-mode
Fix a little typo.
Merge pull request #368 from cheunghy/master

Fix a little typo.
Adding Octave dict
Merge pull request #370 from RyDroid/octave

Adding Octave dict
Merge branch 'master' of git://github.com/auto-complete/auto-complete