Implement comfort loader in all HTTP requests

When there is a pending request show a box
  XXX style the box
Fix some bugs in the submission interface
Style the comfort loader

Displays a progress bar that lasts 3 seconds
Show the number of pending request
Change loader to be a spinner.
Display information on the fact that a tip does not exist of has expired
fix #50
Implement translation of texts support.
Add script for generating pot files

* Add pot file for english version of GLClient.
Make the templates a variable.
Add script that outputs javascript file of translations

Implement translation support in GLClient (just to english at the moment)
add main controller to handle template loading
Add MD5 library.
globaleaks version 0.2.0.19
Add support for language switching in GlobaLeaks UI.
Default to english language
Add built translation script
Add node-gettext as a development dependency
Merge pull request #59 from globaleaks/feature/templates

Add support for internationalization
Revert "Add node-gettext as a development dependency"

This reverts commit dda2feab4800104d999605587a2cd0dc545ef588.
added node-gettext 0.2.1 to grunt requirements
Merge branch 'master' of github.com:globaleaks/GLClient into feature/gpg-notification

Conflicts:
	app/templates/default/views/submission/main.html
	app/views/admin/contexts.html
	app/views/admin/receivers.html