Get official LJH file info out of the old group wiki and into Mass

[joefowler]

Original report by Joseph Fowler (Bitbucket: joe_fowler, ).

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The details of the LJH file should be in mass/doc/LJH.md instead of on the old, private group wiki.

[joefowler]

Original comment by Joseph Fowler (Bitbucket: joe_fowler, ).

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Duplicate of #231.

[joefowler]

Original comment by Joseph Fowler (Bitbucket: joe_fowler, ).

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Removing milestone: v0.7 (automated comment)

[joefowler]

Original comment by Joseph Fowler (Bitbucket: joe_fowler, ).

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Fixed in 23d95645