Fix code example for log level checking.
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
Merge pull request #250 from mtbc/log-level

Fix code example for log level checking.
Merge pull request #251 from gusferguson/training-update

Training update
Remaining nitpicks from Mark & JM
Fixing links I broke
Fixing ImportLibrary as per Josh's suggestion
Tutorials to training material & redo index page
Tidying editor & web sections
Adding image & sorting heading hierarchy
Final nitpicks from Mark
And the ones I missed!
Updating Python version required
VistorPatter to VistorPattern
Fixing demo server page
Merge pull request #254 from hflynn/dev_fix3

Developer docs tidy 3
Text fixes & improvements suggested by Mark
Merge pull request #255 from hflynn/user_index

Redo user doc front page & replace old tutorials with training materials
Merge remote-tracking branch 'origin/dev_4_4' into training-material-update