ACP quick actions (#6374)

* ACP quick actions

- Moved restart, build & restart, and logout into separate buttons
- Moved buttons on mobile into the side menu
- Added version and upgrade alert to header / mobile menu
- Moved version checking to server-side with a cache for rate limiting
- Changed "reload" translations to "rebuild and restart"

* Change info alert to black-on-white to match focused search bar

* Fix tests

* Fallback for failed fetch of latest version

test/mocks/databasemock.js

@@ -12,6 +12,7 @@ var nconf = require('nconf');
 var url = require('url');
 var errorText;
 
+var packageInfo = require('../../package');
 
 nconf.file({ file: path.join(__dirname, '../../config.json') });
 nconf.defaults({
@@ -120,6 +121,8 @@ before(function (done) {
 			nconf.set('theme_config', path.join(nconf.get('themes_path'), 'nodebb-theme-persona', 'theme.json'));
 			nconf.set('bcrypt_rounds', 1);
 
+			nconf.set('version', packageInfo.version);
+
 			meta.dependencies.check(next);
 		},
 		function (next) {