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/textAreaField.html

@@ -1 +1 @@
-<textarea ng-model="model" autocorrect="off" autocapitalize="off" ng-disabled="disabled"></textarea>
+<textarea ng-model="model" guac-focus="focused" autocorrect="off" autocapitalize="off" ng-disabled="disabled"></textarea>