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

 - generate an unsigned applet so other can sign using their own cert

 - generate an unsigned jar and a signed jar. Others can get their own certificate and sign their own jar file.

Only one Chat hotkey needed changing to incorporate focus.

Pres hotkey focus fix

Fixed focus and permission bugs for the remaining Presentation hot keys (Next and Previous, Slide selection, Fit to Width/Page) all at once.

Focus moves to Upload Presentation button when the relevant hotkey is used. Also fixed a small permission error in the same function.

whiteboard tools now stay selected after hitting undo

missed a file while removing viewers

Even more client fixes