Plugin Realm should have a 'role' to help maintain changes between plugins

[netniV]

Table plugin_realms should have a new column added called role along with updating existing functions to be able to pass role. If no role is passed, assume 'common' as a default role (this enables backwards compatibility).

This will allow plugin owners to update their realms without creating duplicates as seen in Cacti/plugin_reportit#49

[cigamit]

This way, we can group all realms instead of by plugin, by role. Current roles includes:

• normal user,
• template editor,
• general administration,
• system administration

[cigamit]

It also makes it easier to update realms. Right now realm management for plugins is pretty much broken.

[TheWitness]

Moving this forward a bit to the 1.2.11 release. Plugins will have to adopt.

[TheWitness]

Fixed. Also responsive using flexi-grid layout.