Fix Romanian translations.

Lowercase for full and short month names.
Lowercase for full day names.
Fix Romanian standard date format.

Use dot instead of slash.
Fix Romanian Tuesday name.

Use T-comma instead of T-cedilla.
Fix Romanian plural names

"Syntactically, when a cardinal number determines a noun and when the number has certain values, the preposition de
(roughly equivalent to of) is inserted between the number name and the modified noun in a way similar to English
hundreds of birds" ( http://en.wikipedia.org/wiki/Romanian_numbers#Preposition_de )
Use English as test output in Romanian test.
Merge pull request #1246 from tehnicaorg/develop

Romanian fixes
Added Luxembourgish (lb)
Merge pull request #1247 from mweimerskirch/lang_lb

Added Luxembourgish (lb)