Add number of sessions currently running to output of avmd show api.

* commit '293f2fda':
  FS-9584 Separate initial bitrate negotiation from sample rates

Merge pull request #973 in FS/freeswitch from ~PIOTRGREGOR/freeswitch:feature/FS-9564-add-lagged-detectors to master

* commit 'b44b6e5b':
  FS-9564 [avmd]: add lagged detectors

Merge pull request #972 in FS/freeswitch from ~PIOTRGREGOR/freeswitch:feature/FS-9542-process-audio-samples-in-threads to master

* commit '8e189ed2':
  FS-9542 [avmd]: multithreaded

Addition of detectors which skip first few frames
of audio before they start to process it helps
to properly handle some Verizon voicemails.
The result of avmd test using this commit is
OK. All PASS [100]

Thi scommit also resolves:
FS-9588 Add script for outbound avmdy
FS-9589 Add resolution info to events

Merge pull request #986 in FS/freeswitch from ~WALDYR/freeswitch:FS-9591-Adjust-settings-and-fix-preview-bugs-to-improve-user-experience to master

* commit '0ccf74e2':
  FS-9591 [verto_communicator] Adjust settings and fix preview bugs to improve user experience

Merge pull request #984 in FS/freeswitch from ~WALDYR/freeswitch:FS-8076-Ask-before-closing-page-if-call-in-progress to master

* commit 'ecf5a0ce':
  FS-8076 [verto_communicator] Ask before closing the page if a call is in progress.

Merge pull request #981 in FS/freeswitch from ~WALDYR/freeswitch:FS-8958-no-controls-for-moderator-on-secondary-canvas to master

* commit 'baba2acd':
  FS-8958 [verto_communicator] Fix no layout controls for moderator on secondary canvas

Merge pull request #982 in FS/freeswitch from ~WALDYR/freeswitch:FS-8976-alert-that-the-login-has-failed to master

* commit 'b6057f10':
  FS-8976 [verto_communicator] Properly alert that the login has failed vs silently failing and sitting there.

FS-8976 [verto_communicator] Properly alert that the login has failed vs silently failing and sitting there.

* commit '9df7bfe0':
  column update with negative nibble rate -- FS-9577
  column update with negative nibble rate