1. Added beautification of queries using pgFormatter library
https://github.com/darold/pgFormatter
2. In case of plans that are "explain query" and not "explain analyze"
- don't show bogus "actual ..." info.
This is only for users logged in, with granted "admin" privileges
(is_admin column in users table in database, by default false for
everybody, has to be manually changed in database).
Info page shows loaded modules, perl version and paths to used perl
interpreter and top level of explain.depesz.com application.
- change the secret/secrets code so that it will work in both old and new
Mojolicious versions.
- Add information that perl modules can be installed from distribution
package repositories, and not neccessarily from cpan
- Add more description to information on config file
- Revert default config to previous state
- Add tests (to be run by explain.pl test) that check for required perl
modules
Each plan will have now delete_key (random, 50 character string), which
can be used with url like http://.../d/plan-id/delete-key
to delete it.
The delete key is shown once just after plan creation
