Fix sendToActiveChats

fixes #897

[skip ci]

Add setting to define custom MySQL port.

Implement Telegram Games platform.

#858 add chat action constants

# Conflicts:
#	README.md

Make the code snippets a bit more readable.

Throw unique exception on invalid token and log raw response

Fix getStickerSet (#836)

Added tests for ServerResponse of getStickerSet.

getStickerSet actually returned a chat object, instead of the intended StickerSet object.

This fixes #836

Prevent redefine constant BASE_PATH

Add defined for not redefine constant BASE_PATH

Improve admin send commands

Fix typo and anchor