Added sone lines to rmeoting api description file for dns (I hope thats correct...)

Conflicts:
	install/lib/installer_base.lib.php

Master



See merge request !273

FS#4070 - DMARC CNAMES cannot be added to ISPConfig



See merge request !271

This one also sets type SPF as well as two records within DNS as of RFC4408
Hop that's okay?

This is a considered as stable stable release. (tested the workflow successfully)
Note: I am not perfect at RegEx I know the RegEx for LOC- and DS-Records is actually not checking. The DS-Regex is definitely valid (tested on regexpal).
Along with my dns-status modification this should not be a problem at all.

Next step is to implement some DNSSEC-Requiring Record Types uon request of some others (will be within this branch before removing the WIP state)

Conflicts:
	install/sql/incremental/upd_dev_collection.sql

Signing is not working, I need a energy drink to proceed...

Supposed behaviour just committing to have a point to roll back ICoE

And found a small bug (privkeys were not deleted on zone deletion) which is now fixed
Testing successful. Doing last test then if everything goes well this will be the new merge request

final commit? Will test now a last time and if everything works as expected this will be my merge request