Merge remote-tracking branch 'kali/bug/warn-with-python3' into develop
Fix save log dialog freezing. Closes #3675.

Avoid using native dialog seems to solve the QFileDialog freezing when
qtreactor is used.
See more at: http://www.code-corner.de/?p=171
Merge remote-tracking branch 'ivan-github/bug/3675_qfiledialog-and-qtreactor-freezes' into develop
Update version
Images shuffle
Update intro
Update readme
* Read the docs
* Fix path to gpl image until we switch repos
Add install:bundle section.
Update checklist with symlinks info
Reformat links to downloads with symlinks
Revert repo names for the moment
Minor additions
Add pypi version icon in user/install
Fix README link to rtd