Delete VertextoActiveGroup_Add&Rem.py
Delete cursor.py
Delete Image_by_Name.py
Delete Rigidbody_by_(ID).py
Delete Mix_Vectors_by_Mask.py
Delete switch_node.py
Delete switch_node-simple.py
Create select_vertex_by_index.py
Delete gravity.py
Update scripted.rst
Merge pull request #371 from Kosvor/master

Many of them are unneeded today.
Update profile_parametric.rst
adding prop_search instead of allowing user input
Merge remote-tracking branch 'origin/master' into bmeshview-mods
including info about initial use prevent confusion
Ctrl+Enter kb shortcut to refresh the node tree
adds SvScriptNode update

useful for staying inside the TextEditor
adding prelim code for both Scripted and Profile

refreshes.
adding break instead of continue
adding more sanity checks to tree traverse