Version 1.8.5

Fixes some more issues of 1.8 as reported by users.
No breaking changes in terms of configuration or classes for custom tasks, publishers, ....

These fixes did not make it for the 1.8.4 release.

This will normally be the last of the 1.8 branch, next release will be 1.9 based,
which will be converted to .Net 4.5.

Most important updates :
° Support for Tfs/VS 2013
° Git does not fetch entire changeset with a new project
see setting MaxAmountOfModificationsToFetch in Git (default 100)
° Dashboard install in IIS 7 works