Fixed Verb example in 4.1.3

Was not a valid Verb, although it contained a valid Verb. Brought the Verb out to the root level of the object to parallel the structure of examples given elsewhere in the document.
Fixed example 4.1.6.2#1

Spaces are not allowed in an IRI. Fixed indenting.
fixed indents
changed Interaction Activity properties table and made interactionType required, b/c requirements list says 'Interaction Activities MUST have a valid interactionType.'
undid last commit

interaction activity properties are optional
Merge pull request #474 from chaimleib-scorm/master

Bug fixes in examples