Merge pull request #387 from tornel/translation

Update Spanish Translation
live edit vc: liveEdit member in virtualconsole and vcwidget
add enablewidgetUI in vcspeeddial
add enableWidgetUI in vcaudiotriggers
vcclock: remove connect, already done in parent class
make sure that newly added widgets are editable if in liveEdit mode
vcxypad: liveedit OK
add a placeholder icon
Fix state of newly created widget in live edit
fix virtualconsole mainframe non selectionable in vc liveEdit mode
fix copy of button pressed state
add one comment
Fix erratic behavior with frames
change virtual console live edit icon
doc
Updated Czech translation. Native speakers, please verify!
RGBMatrix editor: preview optimization

Before this change, the editor was requesting all the maps of each step at every step.
Now it request only one map for the current step
This also makes squares.js to work properly !
Merge pull request #388 from plugz/liveedit-virtualconsole-1

liveedit virtualconsole
VC Live Edit: toolbar icon checkable

In this way it is easier to understand if the live edit mode is active or not.
Marked this change as EXPERIMENTAL only in the changelog
Updated translations (just 2 UI strings)