Fixes for docs build:
* Use doc/requirements to follow changes in OpenStack CI for the docs
building, add a tox environment for this.
* Remove reference to "project's download page", the link was removed in
change I2db594d279e1229e5b1600cecad86fe0c3612115 and now we have a
dead link that errors building if warnings are treated as errors.
* Change I2db594d279e1229e5b1600cecad86fe0c3612115 added a column for
DB2 header but not for any entries, enhance table with extra column.
This fixes building of the table if warnings are treated as errors.
* Update to sphinx 1.6.x since that is what is used in OpenStack CI job,
remove issuetracker, it does not work with sphinx 1.6 anymore.
* Disable html_static_path - the content does not exist
* Use python3 for docs building
Change-Id: I76ee4d6dc45f9b04115f093951ae8b745f3ac026
Remove all trailing spaces and tabs in every file in the project.
People have editors configured to do this, which causes them to
accidentally make little whitespace changes in unrelated commits,
which makes those commits harder to review. Better to fix them all
at once.
Change-Id: I17d89f55f41d8599e0ab1a31f646cd161289703e
These restructured text files mostly use spaces, but a few stray
tabs crept in. Change them for consistency.
Change-Id: I89f390d02c737798007423a5126d81ad3d9e032e
Andreas Jaeger