Removed left padding from pagination controls

The content is styled to have left padding for all ol and ul elements and
since the pagination controls are uls, they were receiving the padding as
well. Rules were added to both the relevant structures to make sure there
is not left padding
Banner background image is more responsive

* Added css and javascript so banner fills the entire width of the page
* Banner-large auto adjusts height
   * Fills the window if over 599px wide
   * Otherwise, is 350px in height
* Banner-small height is increased to 350px
   * A bit bigger than the wordpress theme, but allows the whole
   * nav-add-controls toolbar to fit in the header on pages >980px wide
* Removed line-height: 1px declaration from the page-title rule
   * Was causing issues where the text was too close to the dockbar
   * The automatic line-height works better
Modified .delete-tab icons

* Removed text-shadow
* Changed default color to match the colors for the navigation bar
* Changed color on hover