Send all parsed messages.
Updated message-icons.

Fixed which severity should show which icon
Added some soundfiles.
Changes in how messages is handled, added sounds.

Updated inner workings of the messages and added sound-support.
Added global function to play a message sound
Use special method to play sound, and limit history
Updated text/sound mapping.
Changed bitmaps to 8x8

OpenTx doesn't handle 7x7 pixels correct, changed to 8x8 pixels
Abilitty to override message texts, sounds.
Additional soundfiles and ability to override messages
Adjusted telemetry display to api changes.
Refactored status messages and sound
Renamed some soundfiles.
Merge pull request #19 from chsw/recfactor_messagehandling

Recfactor messagehandling
Better soundfiles for status messages

New set of soundfiles from Johnex
Disabled messages didn't stay disabled
Use the same severity-number as the apm reports.
Override status message was broken.
Internal cache of peak-values

Uses an internal cache of peak values to prevent the min/max to show
zero when telemetry link is down. Also shows -- instead of 0 for current
values when telemetry is down.
New texts to parse