Merge pull request #1 from baldo/master

New URL for node form.
Add some values as parameters for form url

eases the input of the required fiedls in the node form,
as some fields can be prefilled
Ensure form link is opened in new window

so vpn key does not get lost if we click the form link
Add message to be displayed on reboot with mesh vpn disabled
Convert site config to Lua, move variable parts (release number) to site.mk
Merge branch 'master' of https://github.com/freifunk-gluon/site-ffhl

Conflicts:
	site.conf
Some missing adaptions for new format