make addons blender versions consistent

[[Split portion of a mixed commit.]]

finished

bpy.ops.mesh.delete(type='ALL') becomes  bpy.ops.mesh.delete(type='VERT')
script still returns some errors in the console but works again.

indentation edits and copy pyrimid from contrib (where I had made some edits), removed so this wont happen again.

Plus a few styling enhancements.

[[Split portion of a mixed commit.]]

* You only have to do layout.prop if you want 1 property, no need for row then!
* Use col, row, sub as variable names, not colsub, rowsub, row2 etc please.
* Povray Addon: Still used a lot of splits, you need no split when you only have 1 column! 

- remove unused imports
- remove/comment unused vars
- fix for some bugs with unused vars being used

removed warning, api r35853
quick fix for error.
line 519 commented out > # bpy.ops.object.location_apply()

added "warning": "Script returns errors"
api r35853

update_tag() tags for depsgraph update only, update() executes normal recalculation and creates edge data.

READ THIS TO AVOID A LOT OF WORK!

New way of linking to tracker pages: just use the parameter "aid" (artifact ID),
to avoid a lot of manual updates later in wiki and svn.

Example:
=========

OLD WAY TO LINK TO TRACKER
-----------------------------

Complete url of a script in Upload
http://projects.blender.org/tracker/index.php?func=detail&aid=25349&group_id=153&atid=467

If we move this in contrib this url will become
http://projects.blender.org/tracker/index.php?func=detail&aid=25349&group_id=153&atid=468
467 becomes 468, so we have to update this in wiki page.

Later on, when this moves into Trunk, the url will become
http://projects.blender.org/tracker/index.php?func=detail&aid=25349&group_id=153&atid=469
468 becomes 469, so we have to update the url in wiki page and svn.

Annoying!

NEW WAY TO LINK TO TRACKER
-----------------------------

Best way to link to tracker page is using:
http://projects.blender.org/tracker/index.php?func=detail&aid=25349

Use "func=detail"
Use "aid"            (which is the "artifact ID")

DON'T use "group_id" (which is the project ID, bf-extensions is project 153)
DON'T use "atid"     (which is the "artifacts tracker ID")

Like this, the url is unique, and we will avoid to update wiki pages and svn after moving pages
 


[[Split portion of a mixed commit.]]

new features see https://projects.blender.org/tracker/?func=detail&atid=469&aid=22015&group_id=153 for updates.

- removing objects is simplified.
- render object enabled on de-generate.
- removed warning, re-render wont crash now.

scripts tested as working

Missed these changes in last patch commit, had to manually merge due to changes in Extensions SVN 1010-1012. 

removed warning & merged current api with loopduplicates fixes

fix for api changes
thanks to loopduplicate

update for changes in rna io_import_scene_mhx.py mapto isnt working as it should since this can now only be accessed as many bools

- comforming after my commit in bf-blender:
  - removed the categories from addons names
  - made 'version' a tuple of integers
  - added 'api' field
  - formatted wiki and trackers pages and added where needed (empty pages are yet to be written by the authors though)

- more conforming:
  - 1 tab = 4 spaces

- please check everything is fine in case I made some gross mistake