Fix Lexeme Diff Order

Authored by Tarrow on Sep 25 2018, 12:05 PM.


Fix Lexeme Diff Order

Ensure the diff order of lexemes is the same as the order we see
the different sections of the entity on the lexeme page.

Also: improve test to cover this

Bug: T185481
Change-Id: Iab8ffb1d712293bcc3e61d4d14d3d5e409ef5d24