Fix misspelling.
add test to service interpreter
Merge pull request #76 from jucoste/interpreter

New service to get a unique interpreter ipython.
Auto Focus is enabled by default.
It can be disabled in Viewer menu.
Merge pull request #80 from gbaty/autofocus

Auto Focus is enabled by default.
Merge pull request #77 from jucoste/rm_lpy_dependencies_oalab

Remove dependencies to lpy into core and oalab
Project: add items method to return all items for a category
Add meta information for project categories
Use dynamic approach to display project summary
Save project after metadata changes
Rename project properties "category_keys" and "metadata_keys"
Follow flake8
Simplify code