fix issues with widgets being present multiple time in virtualconsole widget map
remove deleted widgets from virtualconsole widget map
clear functionmanager at the beginning of doc::clear to avoid crashes
app clearing: clear doc after virtual console

This fixes QLC+ hanging up when clearing contents
with a vcaudiotrigger in the virtualconsole
Merge pull request #421 from sbenejam/master

Catalan translation. Translated new strings.
Engine: revert PR #404 until a final solution is found for this case and Shows
Fixtures: added a whole bunch of fixtures. Credits in the changelog
Update Spanish Translation
Merge pull request #422 from tornel/translation

Update Spanish Translation
Merge pull request #419 from plugz/liveedit-fix-2

Fixed live edit crashes related to the widgets map
Merge pull request #420 from plugz/clear-contents-fix

Clear contents fix
VideoProvider: fixed fullscreen playback on OSX
Engine: correctly hook up postRun to the Video function
UI: fixed SpeedDial layout creation code
ScriptEditor: added syntax check button
UI: fixed time editing of milliseconds (.3 is 300ms and not 30ms)
Updated translations (UI)
Script: unified values and times into a single function.

With this, it is possible to randomize also times
ScriptEditor: hooked up function stopped signal
Fixed Script Editor documentation
Getting ready to release 4.8.3