Bootstrap overrides: Increased specificity of pagination and pager's arr...

...ow SCSS selectors and disabled them in IE8...

* Prevents the arrows from appearing when rel attributes are set on numbered links that have the same destinations as the "Previous"/"Next" links.
* Arrows have been disabled in IE8 since it lacks support for :last-child (would look really strange if only :first-child arrows continued to be shown).
@pjackson28 I just tried the test you suggested and nothing seemed out of place.

The Tables (DataTables) plugin's SCSS extends the ``%pagination-left-arrow`` and ``%pagination-right-arrow selectors``. Apart from those, it doesn't seem to rely on the regular bootstrap overrides' SCSS selectors to display its arrows.

Link:
https://github.com/wet-boew/wet-boew/blob/master/src/plugins/tables/_base.scss#L940