LFSimFeatureHandler cleanup~
Clean up and optimize more draw call logic in llstatusbar.cpp
Support GridName sim feature, show grid name in status bar when hypergridded over to another grid.

V3s will want to add this display to the NavBar, most likely.
Adds const Type& ref() function to SignaledType to get a const reference from it where needed.
Address Issue 1732: Display name in the Communication box

Adds Chat Tabs namesystem combobox to Adv. Chat->Chat UI.