submodule
removed wrapping buttons on links
replaced SVG buttons with glyphicon font, now colorized appropriately in night mode (theme), also fixed title bar dark colours.
"real" default theme (authored styles, no Reading System override)
submodule
RTL TOC items
ah, removed "focus" indicator on page buttons, because Chrome shifts the keyboard focus even during mouse interaction
Merge remote-tracking branch 'origin/develop' into feature/prevNextPage

Conflicts:
	lib/Readium.js
	readium-js