feat: add admin setting to restrict rooms

[sualko]

This pull requests allows administrators to limit the amount of settings each user can configure. The following restrictions are possible on a group/global level:

• maximum number of rooms. If the global limit is set to 0 no one can create a room, but rooms can still be shared with everyone. For this reason the room manager is also visible to everyone. If multiple rules apply for a user, the maximum is chosen.
• access types. All matching rules are combined.
• max participants limit. The maximum of all valid restrictions is applied. For example if the global default is 0, you can define an unlimited rule for another group. This is also true for the max. room property.
• recordings. Once the user is in a group which allows recordings, he can enable the recording feature.

@digitalrevisor @jacotec @remmedia @garblixa would be great if you could test this, before I merge it into master.

fix #43
fix #53

[garblixa]

Hello Klaus,

many thanks for this enhancement!
Unfortunately I do not have a development environment to build and test the package. But I'm happy to report possible errors if you have integrated the changes.

Kind regards
Klaus

[sualko]

@garblixa no problem. Thanks for your reply.

I changed the behavior of the room restriction, it works now similar to all other options. Means access options are combined from all matching rules. I changed the description above accordingly.

[digitalrevisor]

Hello @sualko . This is very cool. I've installed it on our development enviroment to make some tests. It seems to be working fine so far. Only problem I've had is trying to turn off recordings for a group. I get a 500 server error when I do that. Maybe problem when with my installation but I don't know. I attached an image showing the error.

I think these features will be very useful for many. I atleast know it is helpful for our use cases.

[sualko]

@digitalrevisor thanks for testing. Can you provide the response from this request and maybe the corresponding nc log entry? Because I'm unable to reproduce your behaviour.

[sualko]

I did some more tests and it seams to be stable. Therefore I merge it now. If you find any bugs with this feature, please open a new issue.