* Added translations for the hint of the dropdowns
* Updated the DOM generated for the class and object editors to be more precise and correct on semantics.
* Updated the .js to take those changes into account.
* Updated the styles to take those changes into account
* Improved organization in dataeditors.css
* Added a transition on the caret rotations.

TODO:
* remove the value from the titles, the punctuation doesn't match the use
* Accessibility of the reordering feature

* Added basic keyboard support to the reorder tool as an alternative to drag and drop
* Removed titles from the toggling buttons, they only conveyed repetitive info and would need some additional (very similar) translations
* Updated style to use current bootstrap button styles (btn-default instead of btn-secondary...)
* Refined a bit more the style to fit better with what it used to be and better UI navigability.
* Updated translation to reflect the new functionality of the reorder button.

* Replaced the cross with a trash icon for the delete actions.

* Added escaping for the titles

* Added comments