Fix plural form of translations.

The leading '_n: ' should not be part of the translations.

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>

po/nl.po

@@ -63,7 +63,7 @@ msgid ""
 "_n: 1 error\n"
 "%n errors"
 msgstr ""
-"_n: 1 fout\n"
+"1 fout\n"
 "%n fouten"
 
 #: imageedit/sq_converter.cpp:247
@@ -76,7 +76,7 @@ msgid ""
 "_n: Convert 1 file\n"
 "Convert %n files"
 msgstr ""
-"_n: 1 bestand converteren\n"
+"1 bestand converteren\n"
 "%n bestanden converteren"
 
 #: imageedit/sq_imagebcg.ui.h:21 imageedit/sq_imagebcg.ui.h:35
@@ -1056,7 +1056,7 @@ msgid ""
 "_n: 1 item\n"
 "%n items"
 msgstr ""
-"_n: 1 item\n"
+"1 item\n"
 "%n items"
 
 #: sq_diroperator.cpp:563
@@ -1065,7 +1065,7 @@ msgid ""
 "_n: 1 folder\n"
 "%n folders"
 msgstr ""
-"_n: 1 map\n"
+"1 map\n"
 "%n mappen"
 
 #: sq_diroperator.cpp:564 sq_dragprovider.cpp:141
@@ -1074,7 +1074,7 @@ msgid ""
 "_n: 1 file\n"
 "%n files"
 msgstr ""
-"_n: 1 bestand\n"
+"1 bestand\n"
 "%n bestanden"
 
 #: sq_diroperator.cpp:968