Release notes: webadmin 1.6.5.20

[Leon van Heerden]

Version 1.6.5.20
Fixed a small 4 byte memory leak for sites with dynamic device lists (CRE sites)
More code cleanup to prevent other memory leaks.

Version 1.6.5.19
Added sweeper setting: Username lookup. This requires sweeper 1.6.5.13

Version 1.6.5.18
Fixed the DNS that was not being updated on UBUNTU 12.04 and later.

Version 1.6.5.17
Added new Critical Error notification code.
Fixed an issue with regards remote server's license checks on Linux.