Prevent % in research messages from breaking translations.

Translate research messages on loading, and replace %% with %. Research
messages should now use %% for % in ambiguous cases. Fixes #3376.

data/mp/messages/resmessages1.rmsg

@@ -232,7 +232,7 @@ sequenceName = "res_struttech.ogg"
 text = \
 _("Production Improved"),\
 _("Factory module enables medium and large bodies"),\
-_("Factory output speed +100% per module"),\
+_("Factory output speed +100%% per module"),\
 _("Use a truck to add modules to a factory")
 
 imdName = "MICAPSUL.pie"

src/message.cpp

@@ -714,6 +714,8 @@ const char *loadResearchViewData(const char* fileName)
 			v->textMsg[j].remove('\t');
 			v->textMsg[j].remove(0, 2); // initial _(
 			v->textMsg[j].remove(v->textMsg[j].length() - 1, 1); // final )
+			v->textMsg[j] = QString(_(v->textMsg[j].toUtf8().constData()));
+			v->textMsg[j].replace("%%", "%");
 		}
 		v->type = VIEW_RES;
 		v->pData = r;