[doc] Updates with latest trends from bob/bob.devtools;  Make use of bob.extension to find what to link to user guides

Make the documentation link configurable

See merge request !271

The top bar user guide link is currently targetting the static
pages delivered by the site. This patches changes that and makes
it configurable through the settings.

Defaults to https://www.idiap.ch/software/beat/docs/beat/docs/stable/beat.web/doc/user/index.html

Add missing Http404 import

Closes #438

See merge request !270

Samuel GAIST authored 6 years ago and André Anjos committed 6 years ago

Fixes #438

Fix install command documentation

Closes #442

See merge request !269

Fixes #442

Strip database_name from split chars

See merge request !268

If the database name ends with a dot, the split method will return
a list with one empty char entry which means that in the case of
the dataset name generation we might end up with an empty string
and trigger an invalid index error. This patch avoids this by
ignoring leading and trailing split chars.

Update bob/beat-devel dependencies

See merge request !267

This reverts commit 0a43ba68.

beat.web is a website, it doesn't belong to pypi.

[web][doc] more fix in links

See merge request !266

merge new documentation to master

See merge request !265

Improve README and update dev environment

See merge request !264

Fix email sending

See merge request !261