Add training screenshots
Add training files.
output.txt text changes

save it as a JPEG, PNG or TIFF

Select **Save as ...** to save as a JPEG, PNG or TIFF.
Updating screenshots for collaboration.txt and output.txt for 4.4.6 UI
Add training materials to index (see 6e964bc)
Merge pull request #267 from jburel/develop-262

Develop 262
Tutorials to training material & redo index page

Conflicts:
	users/index.txt
Tidying editor & web sections
Adding image & sorting heading hierarchy

Conflicts:
	users/index.txt
Updating Python version required
Fixing demo server page
Text fixes & improvements suggested by Mark
Restoring util scripts to user docs
merge develop -D org -I include -E conflict -E needs-fixes -E broken: PR 268 (User docs develop)