added default value for Brick.js_module

started documentation for Brick
added spacing documentation to client.css
implemented initial version of photo brick
Merge branch 'history' into photo

Conflicts:
	wall/__init__.py
added ImagePostHandler stub (to display.js)
adjusted PhotoBrick and ImagePostHandler to new plugin / db structure
fixed: reset default value for Brick.js_module
implemented fitToParent utility jQuery function

Conflicts:
	wall/res/static/wall.js
added fullscreen style
improved photo screen style (centered video / canvas, refined menu)
refined photo screen navigation (including cleanup before close)
implemented photo posting in remote
fixed: z-index of notification
changed default name of ImagePosts
implemented ImagePost rendering (including style)
added WallApp.remote_config
implemented configuration for remote's DoPostHandlers
added notification for fatal errors on remote
cleanup
made PostHandlers optional (remote)