fix PPM Boss links paragraph spacing
revert wp_boostrap_navwalker to v1.4.4 for Bootstrap 2.3.2

fix third-level menu items not showing
see https://github.com/twittem/wp-bootstrap-navwalker/issues/26
Revert "revert wp_boostrap_navwalker to v1.4.4 for Bootstrap 2.3.2"

This reverts commit 75cc77ca1c9b363b0f47579cfde6e11c7769e716.
Changing the menu depth in template-part-topnav-content.php appears to solve the issue
allow 3 menu levels
add styling for third-level menus
fix menu item width on Uncle and Mama Bear sizes
remove unnecessary rule
add third-level menu indicator
fix menubar icons on Uncle and Mama Bear screens