ObjectEdit needs to be splitted up

[chewie]

The ObjectEdit? plugin is too bloated ATM. It should be split up into several minor plugins like:

• highlight selected instance(s)
• animation viewer
• instance editor (e.g. instance id; NOTE: most of instance properties have to be stored / organised by the clients game data structure, so we only provide a mini plugin here)
• object editor (e.g. blocking properties)

[chewie]

(In [3907]) - added InstanceHighlighter? plugin

• selected instances will now get a color overlay (can be switched to outline in the plugin code)
• removed instance highlighting from ObjectEdit? plugin

• added docking status saving to ToolBar? widget class, added default docking settings for Toolbox
  • set name attribute for ToolBox? to 'ToolBox?' (was an empty string)
• re-arranged init order in MainWindow?.initGui() to make dockareas available for ToolBar?
• small change to screenshot icon to give it a bit more space on the left

related to refs #685

[chewie]

(In [3910]) - re-enabled saving for ObjectEdit? plugin

• implemented XMLObjectSaver which allows serialization of a fife.Object
  • NOTE: only well-formed xml files are accepted
  • NOTE: provides a compat-mode to scan for <object> tree roots, but also uses new <asset> tree root
• added namespace sorting to ObjectSelector?

related to refs #685

[chewie]

(In [3917]) - refactored ObjectEdit?

• removed AnimationViewer? component
• added new cell cost & cost id property (not loaded by trunk/ loaders)
• added cellstackposition property (not loaded by trunk/ loaders)
• plugin now also saves it's docking status in the editor settings file
• objects selected in the ObjectSelector? now also update the ObjectEdit? plugin
• removed all instance related options
• the plugin does however use the selected instance (if present) to show e.g. selected actions or rotations (not working for animated instances yet, as those need a facing location and don't react on instance.setRotation())
• image offset of animated objects can now be editted - the plugin applies the new offset to all animation frames
• saving animation image offsets does not work however (we need to migrate to new XML structure first)

• small fix for InstanceHighlighter? (deselects previous highlighted instances on new selections)
• small fix for ObjectSelector? - moved signal for onObjectSelector elsewhere (!= to Elsweyr ;-))
• adjusted XMLObjectSaver to also save new object properties

related to , refs #685

[prock]

(In [3919]) * Added InstanceHighlighter? to settings-dist for the editor. It is now enabled by default. refs #685