Add support for low fidelity prototypes

[dlabaj]

Add the ability to create a low fidelity version of an application using a flag. The low fidelity option should have the ability to switch between high fidelity and low fidelity. By applying the low fidelity option a low fidelity CSS theme will be put on the application. There also should be the a banner indicating the application is a repository.

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Jira Issue: PF-3185