Added a tutorials file in documentation.

This file is not included yet.
Added correct commands to tutorial file.
Added richt commands to file.

Does not work like it is at the moment,
since <Include> commands are evaluated by GAPDoc
in the verbatim enviroment.
Regenerate documentation
Included first tutorial.
Removed unnecessary doc files.
Merge branch 'master_save'

* master_save:
  Included first tutorial.
  Added richt commands to file.
  Added correct commands to tutorial file.
  Added a tutorials file in documentation.
Merge branch 'docu-fixes' of https://github.com/fingolfin/AutoDoc

* 'docu-fixes' of https://github.com/fingolfin/AutoDoc:
  doc: avoid emitting empty func labels
  doc: regenerate documentation
  doc: move Declare* funcs into separate section
  doc: major overhaul of the documentation
  doc: more cleanup
  doc: Change mentions of CreateAutoDoc to CreateAutomaticDocumentation
  doc: fix some typos in the manual
  doc: rewrap documentation strings, first step towards readability
  doc: remove obsolete GAPDoc comments

Conflicts:
	gap/AutoDocEntries.g
	gap/AutoDocMainFunction.gd
	gap/CreateDocumentationEntries.gd
	gap/DeclareWithDocumentation.gd
CreateAutomaticDocumentation: make create_full_docu param optional

Also, remove it from the documentation. It (and also the already
undocumented 'entities' argument) are only kept around for
backward compatibility.
Add new magic function GenerateDocumentation
Add makedoc.g demo files for GenerateDocumentation

The included makedoc-PKG.g packages could be used as new
makedoc.g files for indicates packages
PackageInfo.g: Add AutoDoc rec

Specify a custom Copyright and extra includes for CreateMainPage.
Add regenerated title.xml and AutoDoc.xml files

This in particular demonstrates how to use the new function for
packages that do not themselves use AutoDoc.
Enable GAPDoc mode by default.
magic: rewrite bib support
magic: adapt makedoc to recent change
magic: disable scaffolding by default, unless PkgInfo.AutoDoc exists
magic: enable autodoc support if autodoc is a 'suggested' dependency

Previously, this was only done for 'needed' dependencies.
magic: another TODO
magic: rename GenerateDocumentation to AutoDoc