Upgrade bot to discord.py v2.1

.env.template

.gitignore

.idea/misc.xml

.idea/root.iml

README.md

cogs/appointments.py

cogs/calmdown.py

cogs/christmas.py

cogs/components/poll/poll.py

cogs/help.py

cogs/links.py

cogs/polls.py

cogs/roles.py

cogs/text_commands.py

cogs/timer.py

data/.gitignore

extensions/appointments.py

extensions/links.py

extensions/mod_mail.py

extensions/poll.py