deposit: thesis submission additions

* Removes collaboration box.

* Adds Thesis Date.

* Hides parent boxes with specific class.

* Fixes date widget html formatting.

Signed-off-by: Pedro Gaudêncio <pedro.gaudencio@cern.ch>
Co-authored-by: Georgios Kokosioulis <georgios.kokosioulis@cern.ch>
deposit: thesis degree types KB addition

Signed-off-by: Pedro Gaudêncio <pedro.gaudencio@cern.ch>
deposit: license field addition

Signed-off-by: Pedro Gaudêncio <pedro.gaudencio@cern.ch>