0.13dev: Added support for `X-WR-CALDESC` and `X-WR-TIMEZONE` properties in the ics export of the roadmap.
0.13dev: Added support for `X-WR-CALDESC` and `X-WR-TIMEZONE` properties in the ics export of the roadmap.

Patch by Thijs Triemstra. Closes #9668.


git-svn-id: 0d96b0c1a6983ccc08b3732614f4d6bfcf9cbb42@10177 af82e41b-90c4-0310-8c96-b1721e28e2e2

rbaumg/trac,rbaumg/trac,rbaumg/trac,rbaumg/trac