Technical spec for the workstation, second draft

[Matthias Clasen]

Thanks for all the feedback !

Instead of replying individually, I've made a number of edits to the
document, picking up some of the suggestions made in the discussion.

In particular:

- Added a preface explaining that some parts of the spec may not be 100%
realized in the first version, and that the spec needs to be aligned
with the base WG

- Added gedit and nautilus as core application

- Added an explanation of the term 'core application', and language to
discourage dependencies between applications.

- Added 'problem reporting' to core services

- Reworded the firewall section

- Added developer assistant as core application

- Update the package list and sort it

- Added a 'file system' section

- Specify that the theme will be Adwaita

- Added an (empty) section for installation methods and media



Keep the feedback coming