Updated gitignore
deleted duplicate ids of radio-divs
deleted duplicate ids of radio-divs
Merge branch 'dzb' into show_active_color_theme

Conflicts:
	.gitignore
	lib/ReaderSettingsDialog.js
	templates/settings-dialog.html
more elegant checking of active theme radio button (version by Lars)
merge show_active_color_theme into dzb
align of radio buttons within radio divs via bootstrap grid system