Make the hotkey context names translatable

Originally committed to SVN as r6682.

aegisub/po/make_pot.sh

@@ -26,6 +26,10 @@ find ../src ../src/command -name \*.cpp -o -name \*.h \
 sed '/"text"/!d;s/^.*"text" : \("[^"]\+"\).*$/default_menu.json|0|\1/' ../src/libresrc/default_menu.json \
   | maybe_append
 
+grep '"[A-Za-z ]\+" : {' -n ../src/libresrc/default_hotkey.json \
+  | sed 's/^\([0-9]\+:\).*\("[^"]\+"\).*$/default_hotkey.json|\1|\2/' \
+  | maybe_append
+
 find ../automation -name *.lua \
   | xargs grep tr\"[^\"]\*\" -o -n \
   | sed 's/\(.*\):\([0-9]\+\):tr\(".*"\)/\1|\2|\3/' \

aegisub/src/hotkey_data_view_model.cpp

@@ -143,7 +143,7 @@ class HotkeyModelCategory : public HotkeyModelItem {
 public:
 	HotkeyModelCategory(wxDataViewModel *model, wxString const& name)
 	: model(model)
-	, name(name)
+	, name(wxGetTranslation(name))
 	{
 	}