workflows: new buttons for pages

* Copies the datatable page switch to the bottom and the
  top.

Signed-off-by: Georgios Papoutsakis <georgios.papoutsakis@cern.ch>
workflows: tags fix

* Fixes a bug of refreshing when a tag was removed.

Signed-off-by: Georgios Papoutsakis <georgios.papoutsakis@cern.ch>