Missing languages in RTE insert link dialogue

Fixes this issue: http://issues.umbraco.org/issue/U4-2551
Enabled lists plugin in tinymce by default

Fixes http://issues.umbraco.org/issue/U4-3023
Revert "Enabled lists plugin in tinymce by default"

This reverts commit 3abd4df8bd27631a797b8108228cca2180e55e19.
Revert "Revert "Enabled lists plugin in tinymce by default""

This reverts commit 41f8f026783d6be52bc3e3488ca896d2e42c4aa7.
Revert "Revert "Revert "Enabled lists plugin in tinymce by default"""

This reverts commit 14721422fa150432a0d5ca26f2dd59e8d9850d9e.