Fukász Rómeó Ervin / cloud

Conflicts:
	circle/dashboard/templates/dashboard/base.html

Feature network gui improvements

* closes #358 Automatically select a free ipv4 address based on vlan (host creation)
* closes #357 Automatically generate ipv6 address from ipv4 (host creation/edit)
* closes #354 MAC address autocomplete
* closes #360 Add sensible default and help_text to Vlan.ipv6_template

See merge request !273

Feature opensearch

* tested in firefox
* doesn't work in chrome 💩

See merge request !272

closes #360

fixes #349

leading whitespace is not wellformed
now tested and works in firefox, chrome is buggy

fixes #317
can't test because
https://code.google.com/p/chromium/issues/detail?id=245988

Issue 349 fav icon

See merge request !271

fixes #349

Issue #353 vlan detail

See merge request !270

fixes #353