improved stat collector: merge (not rewrite) statistics for the different pages with the same root widget
made stat collector to gracefully report JSON parse errors
little fix in optimizer stat file defaults
removed dangerous sorting of CSS from stat collector
fixed problem with incorrectly injected widget's CSS classes into it's inlines in some cases
Merge branch 'release'
Merge branch 'release'
Merge branch 'release'
fixed issue with annoying Collection.sync future timeout
refactored Future-related behaviour in couple of places in Collection to made it more consistent in case of errors
fixed issue with annoying redundant incompleteBrowserInit logging when widget is already going to die or re-render
added cleaning of Context deferred debugging timeouts when widget is cleaning
merged Future different Future clearing methods into one
minor debug message fix
fixed doubling of debugging deferred timeouts in Context