examples.py: rename a few Datalog examples
examples: only show label, move code to attribute
raco: upgrade submodule with various fixes
examples.py: strip examples read in from disk

just removes trailing and leading space, if any
Merge branch 'master' into upgrade-examples
switch examples to list-group
examples: remove MyriaL examples that cannot be executed.

See #100
examples: add the SeaFlow demo query

Shows off real science data plus optimizer features
List group with links
Example list in paragraph to give it some space
Show abbreviated version of code in examples list.
minor cleanup to datalog examples
layout: set max height for examples list
layout: less padding in main editor
Use the available window height (js hack)
Display how many lines are not shown
Merge pull request #96 from uwescience/upgrade-examples

Upgrade examples