JBIDE-14723 New Collapsible Set wizard creates unnecessary </div>

Put cursor inside first collabsible content block.
JBIDE-14641 Error in opening palette when source has no file

Prevented exceptions.
JBIDE-14746 Generated three row for toggle mode

Three rows give better view when stripes checkbox is selected
JBIDE-14747 Improve content location for header/footer wizards

Add "Page content goes here." text to preview
JBIDE-14468 HTML5 audio widget

Implemented HTML5 audio widget. Test is added.
JBIDE-14749 Fixed JQM Palette wizards for Windows 64bit + VPE
JBIDE-14733 JUnit tests for JQM Palette wizards code generation/insertion

Added comparing of text generated for text preview
and text inserted into file. They should be equal
when ignoring formatting.
Fixed New Footer wizard (JBIDE-14748) by always
assigning 'end-text' (even empty).