Done:
* Plugin loading process
* Infra-structure for plugins registering and event activations.
* Three fixed routes for plugins.
* Methods to define plugins meta-information.
* Interface for activation and deactivation of plugins in the
environment panel.
* Hotspots:
- Buttons in the control panel.
- Tabs in the profile (including expanded_template method).
- New attributes for profile.
* Possibility for the plugin to add new tables.
* Mezuro prototype.
Missing:
* Test integration.
* Dependencies integration.
* Possibility to add behaviours in noosfero base models.