Create a version 1.0, to manage Pdns 4.0.0 and greater

[tuxis-ie]

Lots of new features and fixes. Greatest change is that we now support the official PDNS Api, for PDNS > 4.0.0!

• We now open the records if you click the row. (Closes A zone should be opened when the row is clicked #2)
• We store the owner of a zone in Pdns. (Closes Add domains.account to new zone #25)
• We allow setting 'set-ptr', which tries to set the PTR for an A or AAAA-record. See https://doc.powerdns.com/md/httpapi/api_spec/#url-apiv1serversserver95idzoneszone95id (Closes Make it easy to add A and PTR records as a pair #51)
• We implemented logging. (Closes Please add version control / logging changes to the admin #67)
• Support PDNS => 4.0.0. (Closes some more changes appear to be necessary for api v1 compatibility #73)
• We can clone zones (Closes Copy domain records #81)
• We can sort the records on Name, Type and Content (Closes Make "content" sortable #83)

Other stuff to note:

• Searching is now done by Pdns via the (undocumented) search-data-call. It searches zonenames, records and comments.
• A lot of new stuff has been written to make objects of a zone and its component. Main reason for that is that PDNS decided not to do 'records' anymore, but 'rrsets', which hold records. You might notice that you are unable to set a different TTL for two records in the same rrset. This is illegal because TTL is part of an rrset, not a record.
• You may want to look at includes/class/ if you are looking for ways to communicate with PDNS via PHP. It might make your life easier.
• NSEdit is no longer using submodules which made installation a bit difficult. We're now using subtrees which also include the files of the subtrees in the nsedit repo. This makes downloading NSEdit easier (as a ZIP/tar.gz file).
• v0.9 has been released for those of you that are still running PDNS < 4 (like me ;))