UI: make many modifier strings translatable

This includes:
- new modifier names

It mostly uses `N_` because the strings are actually translated elsewhere.
The goal is simply to export them to .po files.

Most of the new translations were reported in T43295#1105335.

Reviewed By: mont29

Differential Revision: https://developer.blender.org/D15418

source/blender/modifiers/intern/MOD_datatransfer.c

@@ -474,7 +474,7 @@ static void panelRegister(ARegionType *region_type)
 #undef DT_TYPES_AFFECT_MESH
 
 ModifierTypeInfo modifierType_DataTransfer = {
-    /* name */ "DataTransfer",
+    /* name */ N_("DataTransfer"),
     /* structName */ "DataTransferModifierData",
     /* structSize */ sizeof(DataTransferModifierData),
     /* srna */ &RNA_DataTransferModifier,