Classes summary
	| ClipitActivity | Contains all elements required to carry out the JuxtaLearn learning method in
which Student work in Groups around a selected Tricky Topic. | 
	| ClipitChat | A direct message sent through ClipIt. It has a sender (owner), a single
destination, and can have attached files. | 
	| ClipitComment | A rich-text Comment written by a User and directed to any single Resource. It
may contain attached files, and can respond to another user's comment
(optionally). | 
	| ClipitEvent | A system event triggered by any user action (directly or indirectly). | 
	| ClipitExample | An Example experience in which students have trouble understanding a Stumbling
Block (or Tag). | 
	| ClipitFile | A binary file with thumbnails (in case of images), and can be tagged and
labeled. | 
	| ClipitGroup | A collection of Students contained inside an Activity. Also links to all Group
Resources. | 
	| ClipitLA | Learning Analytics instance and interface class, for working with the external
Learning Analytics Toolkit. | 
	| ClipitLabel | A key term (Label) which can be linked from any Resource as metadata for richer
linkage, searching and context. | 
	| ClipitPerformanceItem | A Performance item which can be linked from Resources to denote that it has been
applied to them, and allows for richer linkage, searching and context of
Resources. | 
	| ClipitPerformanceRating | A 5-star Rating on a Performance Items applied to a Resource, submitted by a
user as evaluation feedback. | 
	| ClipitPost | A discussion forum Post which can be a topic starter or a reply to another Post.
Contains Link to the topic starter Post ID, and may have files and/or Resources
as attachments. | 
	| ClipitQuiz | A collection of Quiz Questions, with a link to a Tricky Topic, links to the
Tricky Topic Tool Quiz answering and score review URLs, and Author name. | 
	| ClipitQuizQuestion | A Quiz Question containing a main question (in the "name" and "description"
properties), with a set of Options, a Validation array with the correct pattern
of Options, a Difficulty value, can be Tagged, can be linked to a Video, and
contains links to all Results submitted by Students to this Question. | 
	| ClipitQuizResult | A Student Result for a Quiz Question, with a link to it, and a boolean value to
show whether it is Correct or not. | 
	| ClipitRating | A complete User Rating linked to a published Resource, containing an Overall
boolean rating, links to Tag Ratings and Performance item Ratings. | 
	| ClipitRemoteTrickyTopic | An class which holds properties for Remote Tricky Topics. | 
	| ClipitRemoteVideo | An class which holds properties for Remote Video objects. | 
	| ClipitResource | An extensible class which holds common functionality and properties for Resource
objects such as Videos or Storyboards. | 
	| ClipitSite | The Site class, which is unique (only one instance) and holds general Site
information and Site-layer Resources. | 
	| ClipitStoryboard | A Storyboard object linking to a binary file to use with external authoring
component. | 
	| ClipitTag | A Tag (Stumbling Block) identifier which is linked from one or more Tricky
Topics, and which can be added as metadata to Items or Resources. | 
	| ClipitTagRating | A rating of whether a Tag (Stumbling Block) has correctly been covered in a
Resource. It is contained inside of a ClipitRating instance which points to a
specific Resource. | 
	| ClipitTask | An atomic set of work which composes activities. | 
	| ClipitTrickyTopic | A main topic to explain through videos, which can be decomposed into tags
(Stumbling Blocks). | 
	| ClipitUser | Represents each human user interacting directly or indirectly with the ClipIt. | 
	| ClipitVideo | Contains the final product (video) of a group during an activity. |