caution in dev mode passwords exposed

[biji]

Please add caution for new users that in dev mode, passwords are exposed by symfony profiler

http://symfony.com/doc/current/configuration/external_parameters.html

And there is no other way to hide it except go to production mode

[michaelhiiva]

A little warning about database info and database ENV being exposed in profiler would be nice to add for new users who are not aware of it. There is already a caution for Environment Variables in Production for a similar issue, so I don't see any harm in adding a warning explaining that their database info will be exposed in profiler when working in dev mode.

[javiereguiluz]

We're trying to fix this in #9793. What do you think? Thanks!

[javiereguiluz]

Fixed by #9793.