Slightly confusing what "Clients" means

The feature we have where a user can add sip client credentials currently looks like this:

I think it is going to be slightly confusing for people, because "client" is quite a generic term. I would like to see a few changes:

The left hand nav can stay the same ("Clients"), but the title in the Content view should change to "SIP client credentials"
"No clients" should change to "No sip clients"
"Add client" should change to "Add sip client"

Finally, between the title and the filter box I think we should add two lines of descriptive text that read

Your sip realm is <realm>.
You can add sip credentials below to allow sip devices to register to this realm and make calls.

Note that if the sip realm is not defined for this account, we should instead show one line:

You need to associate a sip realm to this account in order to add sip credentials.

jambonz / jambonz-webapp