Show term attributes in term-portlet of translate5s editor

At the moment you can see the definition of a term on mouse over in the right-side term-portlet of the editor (if there is a definition).

In the future you should also see there all available attributes of entry, language and term-level, except linked other entries/terms.

Potentially available links should be clickable and open a new browser window/tab.

Since attribute values may contain a sentence or two, the attributes should be rendered in a table-like structure: left column anttribute name, right column attribute value.

Refactor the current portlet implementation so the content is not loaded in iframe (render the content as extjs template). The portlet code should be moved to termtagger since it is termtagger logic. Also the portlet is visible only if the task has terminologie (Editor.data.task.get('terminologie') ).