Don't install hugo and other files when you download the gem.

[TreyE]

PR Checklist

Please check if your PR fulfills the following requirements

• The title follows our guidelines
• Tests for the changes have been added (for bugfixes/features), they use let helpers and before blocks
• For all UI changes, there is cucumber coverage
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PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature (requires Feature flag)
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• Build related changes
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A brief description of the changes

Current behavior: When you install the ACA entities gem, it will also install all of the hugo documentation, this actually takes a surprising amount of space in images on developer machines.

New behavior: Installing the gem as a dependency doesn't install the big Hugo files.