Summary:
Most of the examples require properties to be enabled on edges so this change
specifies that flag explicitly. Also, errors are handled better by replacing
`bolt_client` with `mg_client`. Missing indices are created to improve import
speed.
Reviewers: teon.banek
Reviewed By: teon.banek
Subscribers: pullbot
Differential Revision: https://phabricator.memgraph.io/D2594
Summary: New tutorial for backpacking through europe
Reviewers: dsantl, msantl, buda
Reviewed By: dsantl
Subscribers: pullbot
Differential Revision: https://phabricator.memgraph.io/D1954