Updated new-groups / group-plans static page #8674 (#8729)

* dummy

* Renamed internationalized strings to more meaningful names

* moved the new group creation state out to its own URL, so it can also be linked to by the static/plans page

* Added redirect-through-login functionality from the static/plans page new-group button
This includes a static non-modal login page (similar to how other sites have both a login page and login modal)
The login body has been abstracted out from its modal-specific view into mixins to accomplish this

* deleted bak files added by mistake

* deleted scripts added by mistake

* changed static/plans Create Group button text

* Added form link (https://github.com/HabitRPG/habitica/issues/8674#issuecomment-303518039)
Removed changes to non-EN locale files (https://github.com/HabitRPG/habitica/pull/8729#issuecomment-303555211)

* reverted key name changes as per https://github.com/HabitRPG/habitica/pull/8729#issuecomment-304515534

* changed $rootScope to $scope
https://github.com/HabitRPG/habitica/pull/8729#discussion_r120695874

website/client-old/js/app.js

@@ -146,6 +146,13 @@ window.habitrpg = angular.module('habitrpg',
           title: env.t('groupPlansTitle')
         })
 
+        .state('options.social.newGroup', {
+          url: '/new-group',
+          templateUrl: "partials/options.social.newGroup.html",
+          controller: 'NewGroupCtrl',
+          title: env.t('newGroupTitle')
+        })
+
         .state('options.social.guilds', {
           url: '/guilds',
           templateUrl: "partials/options.social.guilds.html",