Add moment.js date translation

Display timestamps regarding update points or publishing dates as
human-friendly "relative times". The data for the JS function is
located in each of the moment-from_now class elements in their title
tags.
Fix display issue for unread articles

Fix an issue where more unread articles are indicated than really
available. Also fixed the article view where more articles are expected
than available in empty accounts. This lead to incorrect lay outings.
From now on the encrypted validator (1) column will be used for such
operations.

And enhanced unread counter beside feed list in the Feed Library. It
now displays no count number higher than 999 and will instead replace
the number with three • bullets.
Removed redundant function

The showAllUnread function was integrated into the more global
showArticles function. Instead of calling an unique action function,
showArticles gets pushed a default value 'unified' to determine the
action purpose.