Fix for sidebar searching when there are no sidebar to search (#3010)
Fix for sidebar searching when there are no sidebar to search (#3010)

* added examples for box shadows

Add some examples for shadows on certain elements/widgets like the cards or tables; mainly to help with color contrasting since the body background has a similar color / tone with the element/widget's background

* Revert "added examples for box shadows"

This reverts commit 3aa62588db981d5bd97f55a93a1e54ee84b0d70d.

* Fix sidebar searching

If there are no data-widget: "sidebar-search" found, then stop init()
almasaeed2010/AdminLTE,slachiewicz/AdminLTE,slachiewicz/AdminLTE,garrettwong/AdminLTE,almasaeed2010/AdminLTE,oyjt/AdminLTE,garrettwong/AdminLTE,oyjt/AdminLTE,oyjt/AdminLTE