Correctly save private tabs: use source document from tab.linkedBrowser
(https://addons.mozilla.org/addon/private-tab/)
Merge pull request #46 from Infocatcher/save_private_tabs

Correctly save private tabs: use source document from tab.linkedBrowser
Update history topics
Update tabsdragutils
Bump maxVersion to 24.0a1
Bump version to 0.7.2013052901
Update library
Suppress error around missing getShortcutOrURI() on Firefox 25.

It was called only for "currentURI" of tabs, so it never resolved shortcuts on this addon.
See also:
https://github.com/piroor/treestyletab/issues/524
https://bugzilla.mozilla.org/show_bug.cgi?id=846635
Update library
Change label of close right/left tabs feature

Close Right Tabs =>
Close Tabs to the Right

Close Left Tabs =>
Close Tabs to the Left

based on the style of https://bugzilla.mozilla.org/show_bug.cgi?id=866880
Change label of close right/left tabs feature in the configuration dialog

based on the style of https://bugzilla.mozilla.org/show_bug.cgi?id=866880
Hide custom "Close Tabs to the Right" menu item for lately Firefox
Add comment for Firefox 24
Disable customizability for "remove right tabs" item for Firefox 24 and later.

Because the feature is provided by Firefox 24 itself.
Suppress errors around missing drop indicator bar
Bump maxVersion to 27.0a1
Bump version to 0.7.2013100801
Remove MultipleTabService.IOService.
Remove MultipleTabService.PromptService.
Remove MultipleTabService.XULAppInfo.