ref #395, update grunt-contrib-imagemin version to 0.5.0
Fixes #380 and #378
Removing nbsp since the text would wrap differently for each locale
Uglify modernizr and requirejs

fixes #393
Merge pull request #398 from pdehaan/signin_copy

Fixes #380 and #378
ref #395, fix some imagemin build issues with caching
Merge pull request #396 from mostlygeek/master

fixes #395, update grunt-contrib-imagemin version to 0.5.0
Merge pull request #400 from mozilla/issue-393-uglify-stuff

Uglify modernizr and requirejs
update to fxa-js-client 1.9

Thanks @zaach and @vladikoff!
Merge pull request #416 from mozilla/fxa-js-client-1.9

update to fxa-js-client 1.9