hot fix for itemsChanged accumulation

rollback changes made in 0.9.10 as wrong approach to solve problem with
doubles events in some cases;
as realized problem affects Slice only (as we know now);
this commit rollback setAccumulateState code and fixes Slice to work
propertly in this mode
Merge branch 'master' into 1.0.0-rc2
remove basis.data.Object#cascadeDestroy
fix dates in history
remove basis.data.Object#canSetDelegate
remove basis.data.Object#getRootDelegate method
remove basis.dom.wrapper.Node#hasOwnSelection method
remove basis.dom.wrapper.Node#nodeType
remove basis.dom.wrapper.Node#getChildren method
prevent node destroy if it delegate dataSource item
move basis.ui.Node#focusable to basis.ui.field.Field
fix root & syncAction problem on init for basis.data.Object
remove basis.fn.body and basis.utils.info implemented
enable markup for docs index
remove basis.fn.def
fix dictionary path resolving for acp
warn about action name isn't found in Node#action list
move basis.html to basis.utils.html
remove usage of basis.timer, replace basis.timer.* -> basis.*
binding bridge attach/detach methods should return nothing (undefined)