Fix menu inconsistencies

This commit fixes two issues:

- UV/Image editor uvs menu did not match the 3D View's which was changed in rB2b240b043078
- Circle select tool was missing in particle edit mode

Reviewers: Severin
Differential Revision: https://developer.blender.org/D2329

release/scripts/startup/bl_ui/space_view3d.py

@@ -710,6 +710,7 @@ class VIEW3D_MT_select_particle(Menu):
         layout = self.layout
 
         layout.operator("view3d.select_border")
+        layout.operator("view3d.select_circle")
 
         layout.separator()