* Lattices: properties editable, editmode operators, menus working
again. As a bonus you can now edit u/v/w in editmode.
* Shape Keys: some code cleanup, and added more buttons. The
value/min/max buttons don't work correct yet though.
* Fix issue with uv textures, vertex colors not being visible outside
editmode, and a few other issue. Mesh.edit_mesh is now NULL when
not in editmode.
RNA
* Added the relevant active_*_index properties, with proper
get/set/range, updates and notifiers.
* Context.tool_settings.
* ToolSettings.vertex_group_weight.
Operators
* MESH_OT_uv_texture_add/remove
* MESH_OT_vertex_color_add/remove
* MESH_OT_sticky_add/remove
* OBJECT_OT_vertex_group_add/remove/assign/remove_from/
select/deselect/copy/copy_to_linked
* OBJECT_OT_shape_key_add/remove
UI
* Some updates and cleanups in list template code.
Known issue: when going in & out of editmode, uv textures and vertex
colors dissappear. I thought me->edit_mesh would be NULL when not in
edit mode but it is not?
* Search popup + autocomplete for bones, vertex groups, etc. This
is done with layout.item_pointerR, specifying an RNA collection to
take the items from. Used by constraints and modifiers.
* Some tests with the List template, ignore those for now..
* Added SCROLL button type, use like a NUMSLI basically, with
a1 used to define the scroller size.
* Add scroll and toggle colors to the Theme (toggle was set to
draw like radio in a recent commit, but it's the intention
these look different).
* Added rudimentary list template, used for object material
slots, this is WIP though.
* In popup menu, split text with line breaks over multiple
lines, makes python errors display slightly nicer.
* Fix context.cloth, was not being set correct.
* Fix errors with context pinning, scripts should
not assume context.object to be there.
* Always show preview even if e.g. the material is not
set, to keep ID buttons from jumping while you're
using them.
* Added more material buttons by William. Thanks.
I made some minor adjustments and added Specular Shader Model RNA.
* Code cleanup and some consistency tweaks of button files.
Notes: Preview render now only shows up when there is an active world, material, texture or lamp.
* Made sure initial panels with ID Datablocks are shown, even when no block is active.
* Context now allows pinning a datablock, independent of
selection.
* Initial ID browse buttons for most buttons tabs.
* Browsing from world to texture now displays world textures
again, but is a bit of a hack, not sure there is a right
way to do this.
* There's a button to switch between active materials and
textures now, only temporary though.
* There's some code to put context part in own region,
disabled still because it doesn't work that well yet.
