Renames some fields in config.js.

for switching between camera and screen.

Switches the order of the parameters of desktopsharing.addListener to match the rest of the code. Renames variables.

Stores info from last presence received for participant and dispatch it if any on creating remote streams to reflect video muted state. Race condition detected by tests where we miss presence info cause stream was not created when we receive presence packet.

Uses SDPUtil filter special characters method through xmpp interface instead of importing it directly.

sentPackets stat is 0, and possibly fixes misinterpreting a remove
stream as a local).

Some fixes in dynamic config retrieval

Re-use current connection's domain as ping destination instead of accessing config.hosts.domain directly.

CONNECTION_INTERRUPTED event will now be generated if we've ever been in stable state(we can go into "unstable" state after muting video and connection problems screen will not be displayed).

Moves method for selecting thumbnail's video element from videolayout to SmallVideo. Fixes issue with muted audio in IE after switching between thumbnails.

external API.

Use fadeTo instead of fadeIn/fadeOut to avoid having display: none on large video which causes issues when Temasys plugin is used.

Fixes issue in IE where click events on local video thumbnail are captured by local audio object created by Temasys plugin on stream attach.