luci-app-ddns: modified to support ddns-scripts 2.1.0-2

- moved /usr/lib/ddns/dynamic_dns_lucihelper.sh to ddns-scripts package
- fixed error message when validating proxy
- modified validating ip_script to allow the usage of parameters
- using ipkg/postinst AND ipkg/postinst-pkg as long as LuCI Makefiles did not
	fullfil requirements of new OpenWrt default_postinst and default_postrm
	reported in Issue #255
- cleanup whitespaces at line ends

Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Merge pull request #256 from chris5560/master

luci-app-ddns: modified to support ddns-scripts 2.1.0-2
Merge branch 'master' of github.com:openwrt/luci

Conflicts:
	applications/luci-ddns/CHANGELOG
	applications/luci-ddns/ipkg/postinst
	applications/luci-ddns/luasrc/controller/ddns.lua
	applications/luci-ddns/luasrc/model/cbi/ddns/ddns.lua
	applications/luci-ddns/luasrc/model/cbi/ddns/detail.lua
	applications/luci-ddns/luasrc/tools/ddns.lua
	applications/luci-ddns/luasrc/view/ddns/overview_status.htm
	applications/luci-ddns/luasrc/view/ddns/system_status.htm
	i18n/chinese/root/etc/uci-defaults/luci-i18n-chinese
	modules/admin-full/luasrc/model/cbi/admin_system/fstab.lua
	modules/admin-full/luasrc/model/cbi/admin_system/fstab/mount.lua
	modules/admin-full/luasrc/model/cbi/admin_system/leds.lua
	modules/admin-full/luasrc/view/admin_status/index.htm
	po/zh_CN/base.po
	themes/bootstrap/root/etc/uci-defaults/luci-theme-bootstrap