We need to strip out unneeded sections from the sphinx docs

[timlinux]

General, RoadMap and User Docs sections need to be removed from sources in inasafe-doc and front index page should be an index for training docs. Old index page can be ditched. Changes pushed to develop.

[rduivenvoorde]

Partly done:
https://github.com/AIFDR/inasafe-doc/tree/develop/docs/source
only user-docs are still there?

[timlinux]

Yes keep user docs and training there for now please as you have it. Thanks @rduivenvoorde

[rduivenvoorde]

@timlinux should I 'sign off' this issues myself, or is it you or another 'reviewer' to do this?