Export CDR wanted when using MySQL CDR configuration

Hi, first of all, thank Alex for adding the SQL feature to save the CDR's. Now it takes less than a second to display tha Call History. Before was about 30 to 40 seconds.

Said that, we noted that right now, when an admnistrator of a single tenant (in the Thirdlane PBX multitenant) goes to the call history, he can just search, he cannot export his CDR. Thas is a Must for our customers, so we will like to see it in the near future.