collections like context.selected_objects no longer return None for empty lists. Update scripts for this.
also removed check for obj.data == None for a mesh. This will never happen.

* Summary of changes:
* Initial support for drawing lines. (Thanks to Algorith for applying my perspective_matrix patch.)
* The distance value (in BUs) is also drawn in the 3D view now.
* Also fixed some wrong calculations of global/local distances.
* Now it's really "what you see is what is calculated".
* Use bl_addon_info for Add-On information. Use "3D View" in category & name
* Renamed reenter_editmode to view3d.reenter_editmode.
* Renamed panel_measure.py into space_view3d_panel_measure.py
* Active object is only used for edit-mode now. Measurement with exactly one sel. (but not necessarily active) object now gets the obj via the sel-object array.
* API change Mathutils -> mathutils (r557)
* Reduced PRECISION to 4
* Deselecting 1 of 2 objects now works correctly (active object is ignored).
* Force a redraw of the area so disabling the "measure_panel_draw" checkbox will clear the line/text.
* Only calculate area (CPU heavy) if a "area" checkbox is enabled.

* Bug http://projects.blender.org/tracker/?func=detail&atid=453&aid=21913&group_id=153
* The script now correctly calculated the surface area (faceAreaGlobal) of scaled meshes.

commit 27934 by DingTo: Improved Addons in User Prefs by Keith Boshoff (wahooney) This adds a "description" field to addons (ideally a small 1 liner, with basic info)

[[Split portion of a mixed commit.]]

add pontiac's clever fix for long wiki links to all scripts
links should be pep8 compliant now.

not 3D View or 3d view.
so there is 1 menu listing in the add-Ons Filter.