Open tasks regarding the EMF metamodel language modules

[tsaglam]

The metamodel frontend is now part of JPlag, but there are some tasks left to do:

• The frontend readmes are missing
• The CLI arguments defined in the language options are a bit verbose
• Generally, it is not intuitive that there are two frontends for metamodels; users do not know which to use when
• The visualization is currently just a very simple tree view; this could be improved (e.g. with Emfatic)
• The MODELS EduSym paper should be linked (https://link.growkudos.com/1pf9dvey3gg)
• We should generate begin and end tokens to distinguish nestings of the same type.
• Currently, the report viewer is not 100% compatible with the EMF frontends; we should fix that.
• The model instance module needs to be merged
• Solve the problem of token order in a match and its visualization
• Rename the language interfaces appropriately
• The wiki needs documentation for metamodel plagiarism detection
• Allow specifying the metamodels via language-specific CLI arguments
• Allow specifying the view type per CLI argument
• Allow disabling normalization per CLI argument
• The shared code of the modules should be in an emf-util project and not in the emf-metamodel project.
• Another solution would be to merge all modules into a single one that supports both models and metamodels

[tsaglam]

• Solve the problem of token order in a match and its visualization

Resolved by #971.

[tsaglam]

Some minor tasks are left, but the most important issues for the upcoming release are resolved.