plugins/google: use custom search API instead of (deprecated) AJAX api
plugins/google: use custom search API instead of (deprecated) AJAX api

jmgao/skybot,df-5/skybot,craisins/wh2kbot,andyeff/skybot,cmarguel/skybot,isislab/botbot,olslash/skybot,Jeebeevee/DouweBot_JJ15,elitan/mybot,crisisking/skybot,callumhogsden/ausbot,Jeebeevee/DouweBot,craisins/nascarbot,parkrrr/skybot,rmmh/skybot,TeamPeggle/ppp-helpdesk,SophosBlitz/glacon,Teino1978-Corp/Teino1978-Corp-skybot,ddwo/nhl-bot