fix optgroup formatting for Firefox. Use `@input-height-base` in `.navbar-vertical-align()` for `.navbar-form`
fix optgroup formatting for Firefox. Use `@input-height-base` in `.navbar-vertical-align()` for `.navbar-form`

BS3 commits 35573db and 0c167a1

mozillo/todc-bootstrap,todc/todc-bootstrap,todc/todc-bootstrap,up2vs/todc-bootstrap,ztx1491/todc-bootstrap,2947721120/todc-bootstrap,2947721120/googlebt4,aaroncnhk/todc-bootstrap,todc/todc-bootstrap