Hotkey cleanup

private chat tabs now adjust to the current font size when opened

Commented out the Focus Colour Picker line from Shortcut Help Window, since the Colour Picker component has been removed.

Commented out the Undo Whiteboard Mark line from Shortcut Help Window, since it is currently inactive.

Better hotkey modifiers

Improved the global/local logic by eliminating loadGlobalKeys() and merging the functionality into loadKeys(). Also made a shortcut function string more clear.

added tooltip to help link

Added separation between global hotkeys and local-to-module hotkeys. Also changed hotkey modifiers to more favourable combinations.

user list alpha sorting is now ascending instead of descending

Fix for the broken whiteboard toolbar

More Recording fixups

This was broken by my earlier change to fallback the pdf filename for
really old recordings.

Rearrange the code so that the pdf logic is only used in the case when
the presentation is a pdf.

 - double check if the user has left the meeting before opening an avatar icon when closing the video view window

Fix panning