base: prevention of double bootstrap import

Signed-off-by: Kamil Neczaj <kamil.neczaj@cern.ch>
deposit: reuse of jqueryplugin wrapper

* Uses common jQueryPLugin wrapper in MessageBox plugin.

Signed-off-by: Kamil Neczaj <kamil.neczaj@cern.ch>
base: improvements for jQuery plugin generator

Signed-off-by: Kamil Neczaj <kamil.neczaj@cern.ch>
deposit: forms template files organisation

* Updates forms template files to work with Invenio ones.

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