[TL] Don't double-install translations.
[TL] Plugin::RemoveTab() for #1434.
[TL] Support removing tabs by Delete key for #1434.
Merge branch 'master' of github.com:0xd34df00d/leechcraft
[TL] "Close tab" button in the list.

Finally closes #1434.
[TL] Tooltip for general tabslist actions.