I18n: Extract many custom labels defined in uiItem*
Those labels needed a manual translation with IFACE_() or RPT_():
- "Add Item",
- "Blend",
- "Cached from the first line art modifier.",
- "Custom Curve",
- "Custom Path",
- "Custom Range",
- "End",
- "Enter a Unicode codepoint hex value",
- "Forward Axis",
- "Insert Unicode Character",
- "Mid Level",
- "Min",
- "Mode",
- "No Items",
- "Object",
- "Path",
- "Probability",
- "Sample Radius",
- "Sharp edges or custom normals detected, disabling GPU subdivision",
- "Start",
- "Texture Mapping",
- "Up Axis",
- "Using both CPU and GPU subdivision",