Revert "Revert "test bootstrap theme""

This reverts commit 8da7bbb6f7c278b2cb678ed588b2e059fc297aa5.
Revert "Revert "added back default css files""

This reverts commit 7685c3942bbd4380e7747eea3a5b65b3bd41dfd5.
Revert "Revert "Restore original views (hide TXC's tentatively)""

This reverts commit abfdab21d98d3489c97a166e214bba6378a9c0d4.