FIX #237: check account prima del recupero di Pact.balance

* Utilizzato il metodo UGLY Supplier.accounting.missing_accounts
* Evita che il blocco di visualizzazione del saldo dia un DoesNotExist

Aperto ticket #238 su metodo UGLY
Trivial fix of psycopg2 requirement version
Merge pull request #42 from kobe1024/master

Trivial fix of psycopg2 requirement version
First implementation of GF profiling files collector.

If profiling is enabled.
Renamed extra/profile.sh in extra/profiling.sh
Restored withdraw if amounted == 0
Fix header for Multibrowser navbar by the mythic Orlando

Now it works for Chromium/Chrome/IE9
This commit introduces the version 0.1 of the app to crete rdf/xml from django models.

More information are available into the app code documentation.
Updated version 0.1 of the app to crete rdf/xml with some changes on utils and urls.
Merge branch 'matteo-dev' of https://github.com/feroda/gasistafelice into matteo-dev