Adding are DAC4725

[GoogleCodeExporter]

What steps will reproduce the problem?
1. running the webiopi standart GUI
2. Device monitor
3.
...

WebIOPi version used?
=>0.7.0

Python version used?
=>3.0

Distro used? (WebIOPi has only been tested on Raspbian Wheezy)
=>use Raspbian

Raspberry Pi board revision? (1 or 2)
=>2 model b

For Javascript side bugs, Browser?
=>firefoxs

Please provide any additional information below.

I can´t get the DAC MCP4725 to work whit the WebIOPi. If I run i2c tool it 
pops us at its default adr.
I went too the blacklist and the "etc/modules"
 Do any of you have any ideas?  

Original issue reported on code.google.com by [email protected] on 2 Dec 2014 at 10:54