* Dragging multiple messages is now possible
* Better email displaying (headers and body are now displayed at the same time...)
* Bugfixes about dropdown menus
* Misc. enhancements.
Many updates in this commit:
* first work on the webmail plugin, for now only emails listing and folders browsing is supported...
* New login form,
* New graphical layout (still needing improvments)
* code factoring between webmail and quarantine plugins
* etc.