documentation: Explain etc/gitweb_config.perl as an override
documentation: Explain etc/gitweb_config.perl as an override

This file can override the automatically generated configuration.

Bug: issue 496
Change-Id: I1756d268e111d0021ebb8d8f248fd7e374ef49b4
Signed-off-by: Shawn O. Pearce <f3ea74d906fa9fe97c1fef6bad9cb871485c7045@google.com>

Seinlin/gerrit,gerrit-review/gerrit,MerritCR/merrit,TonyChai24/test,TonyChai24/test,GerritCodeReview/gerrit,bpollack/gerrit,ckamm/gerrit,catrope/gerrit,basilgor/gerrit,gracefullife/gerrit,gcoders/gerrit,m1kah/gerrit-contributions,Saulis/gerrit,gcoders/gerrit,basilgor/gerrit,gcoders/gerrit,dwhipstock/gerrit,basilgor/gerrit,thinkernel/gerrit,WANdisco/gerrit,GerritCodeReview/gerrit,joshuawilson/merrit,anminhsu/gerrit,hdost/gerrit,bootstraponline-archive/gerrit-mirror,duboisf/gerrit,evanchueng/gerrit,netroby/gerrit,keerath/gerrit_newssh,gcoders/gerrit,thinkernel/gerrit,Seinlin/gerrit,renchaorevee/gerrit,Distrotech/gerrit,skurfuerst/gerrit,WANdisco/gerrit,gerrit-review/gerrit,jackminicloud/test,gerrit-review/gerrit,supriyantomaftuh/gerrit,evanchueng/gerrit,dwhipstock/gerrit,hdost/gerrit,GerritCodeReview/gerrit,thesamet/gerrit,TonyChai24/test,TonyChai24/test,Team-OctOS/host_gerrit,Distrotech/gerrit,midnightradio/gerrit,rtyley/mini-git-server,pkdevbox/gerrit,WANdisco/gerrit,midnightradio/gerrit,GerritCodeReview/gerrit,jackminicloud/test,quyixia/gerrit,qtproject/qtqa-gerrit,jackminicloud/test,1yvT0s/gerrit,atdt/gerrit,thinkernel/gerrit,renchaorevee/gerrit,gcoders/gerrit,sudosurootdev/gerrit,Saulis/gerrit,MerritCR/merrit,gcoders/gerrit,WANdisco/gerrit,thesamet/gerrit,keerath/gerrit_newssh,anminhsu/gerrit,Saulis/gerrit,jackminicloud/test,Seinlin/gerrit,bpollack/gerrit,WANdisco/gerrit,anminhsu/gerrit,Seinlin/gerrit,jackminicloud/test,renchaorevee/gerrit,bootstraponline-archive/gerrit-mirror,GerritCodeReview/gerrit,bootstraponline-archive/gerrit-mirror,hdost/gerrit,ashang/aaron-gerrit,evanchueng/gerrit,netroby/gerrit,supriyantomaftuh/gerrit,anminhsu/gerrit,quyixia/gerrit,evanchueng/gerrit,bootstraponline-archive/gerrit-mirror,teamblueridge/gerrit,gerrit-review/gerrit,austinchic/Gerrit,austinchic/Gerrit,TonyChai24/test,Distrotech/gerrit,Team-OctOS/host_gerrit,midnightradio/gerrit,qtproject/qtqa-gerrit,atdt/gerrit,keerath/gerrit_newssh,anminhsu/gerrit,TonyChai24/test,Team-OctOS/host_gerrit,pkdevbox/gerrit,MerritCR/merrit,WANdisco/gerrit,quyixia/gerrit,dwhipstock/gerrit,sudosurootdev/gerrit,netroby/gerrit,1yvT0s/gerrit,keerath/gerrit_newssh,gerrit-review/gerrit,thinkernel/gerrit,ckamm/gerrit,Saulis/gerrit,teamblueridge/gerrit,quyixia/gerrit,rtyley/mini-git-server,evanchueng/gerrit,ashang/aaron-gerrit,skurfuerst/gerrit,midnightradio/gerrit,hdost/gerrit,jackminicloud/test,quyixia/gerrit,netroby/gerrit,dwhipstock/gerrit,thesamet/gerrit,zommarin/gerrit,duboisf/gerrit,zommarin/gerrit,Team-OctOS/host_gerrit,zommarin/gerrit,CandyShop/gerrit,teamblueridge/gerrit,anminhsu/gerrit,m1kah/gerrit-contributions,ashang/aaron-gerrit,Seinlin/gerrit,zommarin/gerrit,netroby/gerrit,bootstraponline-archive/gerrit-mirror,GerritCodeReview/gerrit,hdost/gerrit,ashang/aaron-gerrit,Distrotech/gerrit,jackminicloud/test,quyixia/gerrit,supriyantomaftuh/gerrit,joshuawilson/merrit,Overruler/gerrit,bootstraponline-archive/gerrit-mirror,m1kah/gerrit-contributions,midnightradio/gerrit,pkdevbox/gerrit,GerritCodeReview/gerrit,1yvT0s/gerrit,Distrotech/gerrit,skurfuerst/gerrit,qtproject/qtqa-gerrit,anminhsu/gerrit,bpollack/gerrit,cjh1/gerrit,supriyantomaftuh/gerrit,GerritCodeReview/gerrit,duboisf/gerrit,catrope/gerrit,duboisf/gerrit,joshuawilson/merrit,CandyShop/gerrit,austinchic/Gerrit,gracefullife/gerrit,skurfuerst/gerrit,netroby/gerrit,gracefullife/gerrit,Overruler/gerrit,pkdevbox/gerrit,MerritCR/merrit,pkdevbox/gerrit,ckamm/gerrit,Distrotech/gerrit,dwhipstock/gerrit,renchaorevee/gerrit,catrope/gerrit,MerritCR/merrit,basilgor/gerrit,jeblair/gerrit,hdost/gerrit,atdt/gerrit,renchaorevee/gerrit,Overruler/gerrit,jeblair/gerrit,thesamet/gerrit,keerath/gerrit_newssh,jeblair/gerrit,qtproject/qtqa-gerrit,thinkernel/gerrit,supriyantomaftuh/gerrit,dwhipstock/gerrit,makholm/gerrit-ceremony,Overruler/gerrit,dwhipstock/gerrit,Overruler/gerrit,Seinlin/gerrit,WANdisco/gerrit,Team-OctOS/host_gerrit,basilgor/gerrit,supriyantomaftuh/gerrit,catrope/gerrit,thinkernel/gerrit,CandyShop/gerrit,zommarin/gerrit,MerritCR/merrit,sudosurootdev/gerrit,makholm/gerrit-ceremony,Saulis/gerrit,netroby/gerrit,thesamet/gerrit,bpollack/gerrit,atdt/gerrit,thesamet/gerrit,gracefullife/gerrit,ckamm/gerrit,MerritCR/merrit,qtproject/qtqa-gerrit,gerrit-review/gerrit,gracefullife/gerrit,renchaorevee/gerrit,1yvT0s/gerrit,makholm/gerrit-ceremony,midnightradio/gerrit,joshuawilson/merrit,1yvT0s/gerrit,bpollack/gerrit,CandyShop/gerrit,makholm/gerrit-ceremony,pkdevbox/gerrit,pkdevbox/gerrit,hdost/gerrit,Seinlin/gerrit,quyixia/gerrit,cjh1/gerrit,sudosurootdev/gerrit,joshuawilson/merrit,cjh1/gerrit,joshuawilson/merrit,CandyShop/gerrit,qtproject/qtqa-gerrit,Saulis/gerrit,qtproject/qtqa-gerrit,thinkernel/gerrit,gcoders/gerrit,joshuawilson/merrit,atdt/gerrit,Distrotech/gerrit,Overruler/gerrit,gerrit-review/gerrit,m1kah/gerrit-contributions,MerritCR/merrit,bpollack/gerrit,TonyChai24/test,Team-OctOS/host_gerrit,renchaorevee/gerrit,austinchic/Gerrit,ashang/aaron-gerrit,jeblair/gerrit,teamblueridge/gerrit,sudosurootdev/gerrit,supriyantomaftuh/gerrit,ckamm/gerrit,teamblueridge/gerrit,joshuawilson/merrit,thesamet/gerrit,cjh1/gerrit,Team-OctOS/host_gerrit