[Localization] strings to translate again and again: Etoys-tiles.po Etoys.po MorphicExtras.po

[Markus Schlager]

Whenever I scan the project files for Etoys and update from the templates, 
pootle says the following strings are untranslated and need attention:

Etoys-Tiles.po:
#194: x
#195: y

Etoys.po:
# 86: B
# 91: I
# 98: N
# 99: n
#103: S
#107: U

MorphicExtras.po:
#589: X

Markus