Add the nocrop option to the image pick activity

This should help avoid OOM errors in FxOS 1.3 until we can make no crop the default.
See https://bugzilla.mozilla.org/show_bug.cgi?id=959430

Note that I have not tested this pull request.  (Sorry!)
Merge pull request #45 from davidflanagan/patch-1

Add the nocrop option to the image pick activity
Merge pull request #46 from Mte90/gh-pages

New graphic
Added information about the gaia look & feel of the boilerplate
New locales: bn-IN, cs, fa, he, hu, ro, sk-SK, sv, ta, tl, zh. Updated: fr, hi.
Updated list of contributors.
Merge pull request #47 from fharper/gh-pages

Added information about the gaia look & feel of the boilerplate
Merge pull request #48 from christi3k/gh-pages

L10n updates
Adding JSHint validation
Manifest file for testing a hosted app via GitHub
Changed image paths
Updating instructions around the App Manager and packaged and hosted apps
Fixing character escaping
Removed DS_Store file
Updated ar, ja, nl, pt_BR and ru translations
fix xhr domain