Correctly distinguish between Dell and Juniper devices

Unfortunately there's not much info we can get from the Dell iDrac
HTML page as it's ridden with JavaScript.
No need to add the server family explicitly
Report Devices prices per Venture
Merge branch 'master' of git://github.com/allegro/ralph into reports

Conflicts:
	src/ralph/ui/views/reports.py
Merge branch 'master' of git://github.com/allegro/ralph into reports

Conflicts:
	src/ralph/ui/views/reports.py
Merge branch 'master' of git://github.com/allegro/ralph into reports
fix total price
Merge branch 'master' of git://github.com/allegro/ralph into reports
change class name
export all device price with components
export all device price with components
fix bad merge
Add an option to ignore network's addresses
Merge github.com:allegro/ralph
Merge github.com:allegro/ralph
Merge pull request #342 from deejay1/varia

Correctly distinguish between Dell and Juniper devices
Merge pull request #383 from deshipu/master

Blacklistowanie networków jako nieunikalnych 
device addresses form - "first free ip" for all networks
Merge github.com:allegro/ralph
Add network and global DHCP options to dhcp configuration