Gives .rs-edit buttons 0 padding, like other icon buttons. Allow icon buttons to provide hidden textual content to improve accessibility of icon buttons.
Adds a hide-text-content mixin that can be used to push text content out of view in icon buttons holding text.
Merge pull request #96 from j00k/override_browser_stylesheet_padding_in_buttons

Gives .rs-edit buttons 0 padding, like other icon buttons. Allow icon bu...