implement support for multiple pub/mark buttons, add plugin which adds a separate mark button to article botton in combined mode (closes #382)

embed_original: change overflow for the iframe content from hidden to auto

Without this change only a portion of the original website is embedded
in Firefox 20. The Chromium 26 behavior is as expected with hidden and auto.

Added 'section' in allowed elements

Another element which was introduced in HTML5.

fix bug with image attatchment settings

Fix typo in config.php

Looks like a typo of "vary" instead of "wary", and "aware" sounds better.

This reverts commit ecac674a.

 Make sure missing feed-icons keep alignment.

Missing feed-icons take 16px as well to avoid alignment glitches in feed list.

Fix: fetching URLs with spaces

Added functionality for navigation without opening articles and toggling expansion of headlines

Updated Spanish translation

Add css optimization to dojo builds

Added other allowed elements to sanitize()

The following html elements are now kept when sanitizing entries: aside, bdi, bdo, caption, col, colgroup, figure, figcaption, mark, ruby, rp, rt, samp, time. Most of them are new in HTML5. Based on the list at https://developer.mozilla.org/en-US/docs/HTML/HTML5/HTML5_element_list

fix "embed original"