G nouns

[myceliaes]

adding g nouns!

[mauraoleary]

Variants should be given using Dir/LR, rather than mentioned in a comment

Also, B nouns should not be changed in G noun branch

[jonorthwash]

Aside from @mauraoleary's comments, which still need to be addressed, entries should be sorted alphabetically.

[jonorthwash]

Also, please be sure you're using the glottal stop character ʼ and not the smart quote character ’. I realise there were some existing inconsistencies, but now is our opportunity to be consistent.