Build: removed ENTRY_PATH for playground's main coffee from gulpfile
Build: separate style file added for playground
KD: log/warn/error exposed to global
Playground changes for testing purposes

we need better testing ground for each component.
SplitView: performance refactoring WIP
Merge branch 'master' of github.com:koding/kd into master.splitview

Conflicts:
	gulpfile.coffee
Build: fixed the broken ENTRY_PATH
Build: removed some parens from gulpfile
Build: added watch to playground styl file
Utils: improved getRandomColor util method
Split: improved default split styles
WindowController: resize listeners simplified
SplitView: hiding scrollbars for correct size calculation on resize
KDView: ::detach added for self removal
SplitView: animated option deprecated
SplitView: defaults improved for better performance
SplitView: @size is added to not to recalculate when needed
SplitView: @type and @resizable added for easy access
SplitView: some old methods deprecated
SplitView: initiation logic changed completely