The ThemeCustomizerEnhanced component stored customCss in a separate
local state that was never propagated to the parent component when
hideActions was true (used in both CreateEventPage and EventDetailsPage).
Changes:
- handleChange() now includes customCss when propagating theme changes
- CSS textarea onChange now propagates customCss to parent in preview mode
- handlePresetSelect() clears customCss when selecting a preset
Fixes#136
Paul Nothaft
dadef81158