Decided for on 'Choose Button' version

Removed erroneous version of the button.
Commented out modal version in index.html.
Commented out ModalCtrl and ModalInstanceCtrl in app.js.
Removed text above 'choose subject' button
Draggable subjects.

Made subjects draggable.
See: http://docs.angularjs.org/guide/directive under ‘Creating a
Directive that Adds Event Listeners’.
Implemented JSON -> SPARQL

Added a second version translator file (translatorV2.js) to adress
changes in JSON template
Further adaptation of translatorV2.js to new JSON
Semicolons added.
Made subjects NOT draggable.

Removed draggable feature from subjects, till we figure out how to make
them draggable without breaking things like adding properties.
Added view variable to subjects