Fix Words with Multiple Lemmas

[idris]

Some words have multiple lemmas. For example, 78:1:1 and
79:13:1

With the current Word model, every word can only be linked to one Lemma. However, in these cases, the Word has 2 Lemmas.

Perhaps lemmas need to be a ManyToMany relationship, but that may add unnecessary complexity. Also, it may affect the ManyToMany relationship between Lemma and Aya.

[doganmeh]

Not in morphology-0.4.txt. They have single lemmas.