add package freifunk-berlin-freifunk-defaults

default settings for /etc/config/freifunk
add freifunk-berlin-dhcp-defaults package
Merge pull request #17 from freifunk-berlin/feature/freifunk_defaults

add package freifunk-berlin-freifunk-defaults
ffwizard-berlin: fix calchwmode to return correct results

The old code just looked into default configs in wireless and therefor ignored
for example 802.11n support (it's not set in the default config).
uci.sys.iwinfo() seems broken that is the reason why we have to get the
parameters from iwinfo directly.
Merge pull request #16 from freifunk-berlin/feature/package_dhcp_defaults

add freifunk-berlin-dhcp-defaults package
ffwizard-berlin: refactor iwinfo code
ffwizard-berlin: add empty table as fallback
ffwizard-berlin: fix syntax and community name in freifunk-berlin-freifunk-defaults
ffwizard-berlin: support vap parameter of community profile

Some communities don't want an additional virtual access point. ffwizard-berlin
now supports the 'vap' parameter in community.profile. To prevent the creation
of an additional access point put "option 'vap' '0'" in the community section.