Hyperlinks added: references are navigable by Ctrl-Click
Improve tabs to have several tabs with same name

Add javadoc
Add cached ressource icon
Clean Tab component

Signed-off-by: PerfectSlayer <bruce.bujon@gmail.com>
Cleanup code and UI
Improve UI

Add progress on export
Improve footer (remove strange borders and add margins)
Fix explorer element sorting in hierarchical view
Improve UI

Remove title borders
Fix save all key binding