These pages documented very straightforward screens and flows that a
user can easily figure out without the help of dedicated documentation.
Besides, those screens are frequently reworked, thus requiring to
maintain the related pages very closely.
This commit removes such low values pages to reduce the technical debt
and allow focusing on actually useful documentation pages.
* remove reference to claim_issue removed in revision
21c4b5c3fd
* mark tex sources as orphan (they're not expected to be linked from
any TOC or other document)
* remove empty expenses.rst file (actual file is expense/expense)
* remove commmented links to deleted documents in applications TOC
* fix footnotes in partnership_es and partnership_fr
Not only is it clearly outdated, as it uses the Issue Tracking module which no longer exists, but it also undermines our Helpdesk module as it shows a way to get round it.
