add footer and header
Merge branch 'fg'

Conflicts:
	utils.py
Fix refs against settings and music modules
Move fillModules to action as getModulesByGroup
Rename ITEMS into PAGE_FOOTER_MODS in page footer
Don't initialize render for each action.display
Validate whether render is initialized for each display
Template renaming

htmlheader.html -> header.html
footer.html -> pagefooter.html
header.html -> pageheader.html
Remove html comments in tempates