GUACAMOLE-302: Additions made to every remaining field (every field except username and password) so that they can now be manually focussed using the custom guacFocus directive.

guacamole/src/main/webapp/app/form/templates/emailField.html

@@ -3,6 +3,7 @@
            ng-disabled="disabled"
            ng-model="model"
            ng-hide="readOnly"
+           guac-focus="focused"
            autocorrect="off"
            autocapitalize="off"/>
     <a href="mailto:{{model}}" ng-show="readOnly">{{model}}</a>