* IE8 refused a negative z-index to place the previous :after behind the .arrow, so I had to flip the styles.
* .arrow is the gray border/background, .arrow:after is now the white inner arrow
* Added a hex IE8 fallback to ensure the arrow shows for <IE9 as rgba() isn't supported
* Simplified some of the CSS for the popover carets

* Remove back to top link (ya'll are lazy :P)
* Center text
* Decrease vertical padding

Fix typo in reset.less

Previously, we were using a generic label selector, but as this was changed in the main forms awhile back, we need to change it here.

Update less/tables.less ( typing, use variable, add border-radius reset )

fixes #5873: @navbarInverseBrandColor not used

Possible typing.

Add @baseBorderRadius as value for some rules.

Add border-radius clearing for first and last td in the last tbody for table with tfoot.

insert missing i18n tag at customize and download string

Fixes #5471: Remove color from .navbar and .navbar-inverse and reassign to .navbar-text to prevent unintended cascading

fixes #5494: style invalid fields as invalid regardless of required-ness