Fix Phalcon installation and code base update

[Jeckerson]

Hello!

psr extension is required for phalcon work. I also updated code base...

[joanhey]

Could you try to update the mongodb variant, if the bug is fixed ?

Good PR !!

[Jeckerson]

@joanhey Can't understand how it works in terms of MongoDB...

In the docs rules it has:

The schema for World is id (int, primary key) and randomNumber (int), except for MongoDB, wherein the identity column is _id, with the leading underscore.

So, when I keep response as is it will send warning message:

WARN for http://tfb-server:8080/mongodb/queries?queries=2
An extra key(s) is being included with the db object: _id

Meanwhile, when I disable id key:

WARN for http://tfb-server:8080/mongodb/queries?queries=501
Response object was missing required key: id

FAIL for http://tfb-server:8080/mongodb/queries?queries=foo
Response object was missing required key: id