Revert "apply 'zurui' style refs #1382"
Revert "change style for selected message refs #1382"

This reverts commit 788707d0a5e4243deb7530e9f3c403d068c1189f.
This reverts commit 5849c0e2e55fd28e5b82d597095ab923c2bc91e4.
add global_js_css plugin refs #1407