modules/admin-full: fix system/admin from form() to cbi() type to add missing apply button (#234), integrate services/initscripts as system/startup

	- don't assume madwifi and nl80211 backends if no backend given
	- only print intersection of group and unicast ciphers in crypto description
	- fix crypto detection on madwifi in client mode
	- bump pkg revision

i18n: Chinese translation is done by too many people to name them all, just use 'by Chinese Translators'

libs/json: Fix a typo and a logic error in json.lua to make luci.json.encode() work like expected (#220)

modules/freifunk: Show remote update in menu only when /usr/sbin/remote-update from the package remote-update is present (#160)