Events, Javascript and design improvements.

Added:
- Ajax page refresh (fixes: closing a dialog, more flexible).
- Styled info page (Info button and style changes).
- Events for cron_status extension.

Fixed:
- Queue status.
- Typography fixes.
- Language fix.
- Cron name fix.
- Style fixes and soft page refresh.

Screenshot:
![cron_status_acp_page3](https://cloud.githubusercontent.com/assets/7805635/3853822/df40b7d4-1ecc-11e4-863d-cde6727ce659.png)
P.S. The version number was changed for testing the design. =)