Using unicode-bidi instead of lrm

* It is less hackish than lrm but please refactor bidi-embed if needed
* lrm was making an extra space for all, so this is fixup for it
Merge pull request #417 from ebraminio/master

Fixing a bidi problem on titles
feed fetching now uses POST (fix #418)
create unique index on user_id (fix #400)
delete sample test
plugin update
fix #395
remove warnings
use title if text is empty (fix #419)
utf8mb4 is not available on openshift (#309)
use less joins
Update nl.properties

Contact me if you think something is wrong.
Merge pull request #423 from Koaieus/patch-1

Update nl.properties
added new theme
new theme
added new theme
Merge pull request #427 from ekovi/patch-4

added new theme
Merge pull request #426 from ekovi/patch-3

new theme
Merge pull request #425 from ekovi/patch-2

added new theme
denormalized fields on statuses for faster queries