Merge pull request #592 from deshipu/master

Add autoscan and address list for the new discovery
Merge pull request #4 from andrzej-jankowski/scan

new snmp_macs plugin
testing plugin
Merge branch 'master' of github.com:deshipu/ralph

Conflicts:
	src/ralph/scan/plugins/test1.py
clean up the snmp_macs plugin
change the format of device scan data, add device.get_data
First version of the scan form
Fix tabs in the search view
Only show choices that make sense in scan form
Show input fields for custom values in the scan form
Add a plugin for getting hostname from DNS
Make the form more compact, add docstrings
Merge pull request #593 from deshipu/master

Interface for running manual scan of an address
Add disks to the get_data
Don't show Extra Costs when they have already expired
Allow expiring extra costs in the past
Hide the "created" field
Merge remote-tracking branch 'deshipu/master' into scan
tests for new snmp_macs plugin added; snmp_version field added