Making "Jump to Keyframes" operator (for Action/Graph Editors) more obvious

This operator used to be called "Jump to Frame". It basically takes the midpoint
(frame number and/or value) of selected keyframes, and positions the current
frame (or2d-cursor in Graph Editor) at this point.

The hotkey for this is now Ctrl-G (i.e. as it's similar to a "Goto Frame"
feature). It is also now in the Key menu instead of in the relatively obscure
View menu, even though it doesn't actually result in any keyframe edits taking
place.

(Also, fixed a typo/grammer issue with one of Remove Bone Group operator)

release/scripts/startup/bl_ui/space_dopesheet.py

@@ -165,7 +165,6 @@ class DOPESHEET_MT_view(Menu):
         layout.operator("action.previewrange_set")
 
         layout.separator()
-        layout.operator("action.frame_jump")
         layout.operator("action.view_all")
         layout.operator("action.view_selected")
 
@@ -275,6 +274,9 @@ class DOPESHEET_MT_key(Menu):
         layout.separator()
         layout.operator("action.keyframe_insert")
 
+        layout.separator()
+        layout.operator("action.frame_jump")        
+        
         layout.separator()
         layout.operator("action.duplicate_move")
         layout.operator("action.delete")