EXP-1433 FIX Speak button can be toggled while editing Input/Output devices when voice is deactivated

EXP-1427 FIX Voice Settings dialog closes when selecting minimize option

floaters only stack on floaters that haven't moved

EXP-1424 FIX Floaters open on top of one another in default position with no offset
floaters now stack with their own kind preferentially

  would remove them from the surrounding toolbars.
* Removed dead drag & drop code
* Fixed issue where saving didn't necessarily work because toolbar populated
  with command id's that didn't have associated names.

EXP-1426 FIX Voice Settings floater button has label Nearby Voice and tool tip with label nearby voice

EXP-1412 FIX Additional Inventory windows are opened directly on top of each after opening additional inventory windows and closing the first time
also made sidepanel floaters reuse the existing instances, saving state

Reviewsed by Leslie

EXP-1353, EXP-1408, EXP-1410 : Fix bugs all related to Teleport History management. Note to dev: some use of boost trckable are being deprecated for thread safety so disconnect established connections in destructors. Also beware of singleton depending on each other as they are lazily instantiated.

EXP-1352 Red directional arrow shown on teleport screen when selecting a destination from the destinations floater to teleport to

Automated merge with bundle:c:\users\richard\appdata\local\temp\thg.7dtedl\ssh__richard@hg.lindenlab.com_paulgproductengine_exp-1386_ttxriq.hg

EXP-1386 FIXED (Notification and Conversation chiclet sizes differ from release viewer when present in bottom bar)

- Disabled buttons autoresize

EXP-1358 FIX Hitting back in the Create group panel or Blocked panel requires multiple clicks for action to occur

EXP-1348 FIX -- Speak button activated when dragging and dropping between toolbars and moving back to Tool box

* Dragging and dropping the speak button will aggressively turn off the
  microphone now, regardless of the initial state of the button.

Reviewed by Richard.

moved "chrome" flags to xui
separated hiding floater title from setting chrome
toolbar toggle button now moves floaters to frontmost and doesn't necessarily rely on focus