Update Classes structure according to latest "Concept Models"

[ronaldtse]

The Glossarist gem is supposed to implement the "Concept models" available here: https://github.com/glossarist/concept-model

However, there are a number of features not yet available. This task is to enumerate all of those and implement them as Classes and attributes.

For example:

• [x] #27
• [x] #29
• [x] #30
• [x] #33
• [x] #34
• [x] #39
• [x] #41
• [x] #42

[ronaldtse]

The Glossarist gem is heavily used by the iev-data gem. We need to ensure that any updates to the Glossarist gem will be also updated accordingly in iev-data.

[ronaldtse]

@HassanAkbar could you help check the concept-models to see if we have implemented everything? If not please help elaborate this task, thanks.

[HassanAkbar]

@HassanAkbar could you help check the concept-models to see if we have implemented everything? If not please help elaborate this task, thanks.

@ronaldtse We still have a few models missing. I'm working on it.

[ronaldtse]

Looks like it's done. Closing.