Don't open disabled button on mouseover
Save information about empty state (and use preloading on mouseover)
Rename: load() -> loadData(), delayedLoad() -> load()
Preload bookmarks on mouseover after delay to improve performance
Ignore, if saved empty attribute + add notes
Bump version to 0.2.2pre3 - 2014-05-06
Install page for v. 0.2.2pre3 - 2014-05-06