Guides: Change to default error view template, use brunch in endpoint code (#3061)
Guides: Change to default error view template, use brunch in endpoint code (#3061)

* change to default error view template, use brunch in endpoint code

* revert use brunch in endpoint code

evax/phoenix,Gazler/phoenix,optikfluffel/phoenix,rafbgarcia/phoenix,phoenixframework/phoenix,eksperimental/phoenix,optikfluffel/phoenix,evax/phoenix,michalmuskala/phoenix,Gazler/phoenix,0x00evil/phoenix,pap/phoenix,keathley/phoenix,dmarkow/phoenix,nshafer/phoenix,keathley/phoenix,nshafer/phoenix,eksperimental/phoenix,pap/phoenix,Joe-noh/phoenix,rafbgarcia/phoenix,phoenixframework/phoenix,dmarkow/phoenix,0x00evil/phoenix,Joe-noh/phoenix,mitchellhenke/phoenix,optikfluffel/phoenix,Kosmas/phoenix,rafbgarcia/phoenix,michalmuskala/phoenix,Kosmas/phoenix,0x00evil/phoenix,phoenixframework/phoenix,jwarwick/phoenix,mitchellhenke/phoenix,jwarwick/phoenix,nshafer/phoenix