Do not use -ms-user-select to prevent selection of elements in IE

Fixes #17639.

(cherry picked from commit 7ae2a43b608eae921b862b7feb6f2910bb45b03a)
(cherry picked from commit e61aff23544049921d406ec5754da1e2e3e14309)
(cherry picked from commit 0a7036f4d8a66b280387d24db91eeec925e2ef9c)
fixes #17968, remove failing jsonp rpc test due to yahoo search API service no longer being available

(cherry picked from commit c68907df322eb146da4404f5058c6624994685f8)

Conflicts:
	tests/rpc.js

(cherry picked from commit d27b5dd17178bf791778a81800c8106bd5b8e5a8)

Conflicts:
	tests/rpc.js