Initial pass at fixing provide-* for custom themes
Merge branch 'master' of github.com:LightTable/LightTable
Revert "Initial pass at fixing provide-* for custom themes"

This reverts commit d7a883506657d751435839244e0cd4c24761fa4d.
Merge branch 'master' of github.com:LightTable/LightTable
Merge branch 'master' of github.com:LightTable/LightTable
Renames :on-active-active-tabset to :tab-active
Merge pull request #1113 from joshuafcole/refactor/rename-active-tab-beh

[Refactor] Rename active tab behavior.