add GET, POST to User listview
changes some models descriptions
replaced in models.py all key with _id to id

using these two sed commands
sed -i 's/ _id/ id/g' models.py
any _id with a space before it

sed -i 's/(_id/(id/g' models.py
any _id with ( before it like in a function e.g. model.get(_id)

because we don't want to replace function names e.g. def link_id()
modified descriptions in models.py