Updates EC2 page
Updates EC2 page

- no more postgres passwords on Debian/Ubuntu
- installer offers test option for binary installations

closedLoop/deepdive,vasyvas/deepdive,shahin/deepdive,wgapl/deepdive,RTsWorld/deepdive,Gela/deepdive,vasyvas/deepdive,RTsWorld/deepdive,closedLoop/deepdive,Gela/deepdive,wgapl/deepdive,sky-xu/deepdive,zifeishan/deepdive,wgapl/deepdive,wgapl/deepdive,HazyResearch/deepdive,RTsWorld/deepdive,Gela/deepdive,closedLoop/deepdive,RTsWorld/deepdive,zifeishan/deepdive,zifeishan/deepdive,Gela/deepdive,shahin/deepdive,sky-xu/deepdive,closedLoop/deepdive,HazyResearch/deepdive,Gela/deepdive,wgapl/deepdive,vasyvas/deepdive,vasyvas/deepdive,zifeishan/deepdive,RTsWorld/deepdive,HazyResearch/deepdive,HazyResearch/deepdive,closedLoop/deepdive,vasyvas/deepdive,zifeishan/deepdive