Removing unused/non-minified css, minifying the bootstrap-tabs css, making the bootstrap-tabs.min.css only be injected when users are using LEFT/RIGHT/BOTTOM tabs instead of always. (Issue #64)
Revert "Change TabPanel to inject custom css for left/right/bottom styles"

This reverts commit bf290bf5d79267739d0ccb31b8f9f5f6a8246fd3.