[Documentation] Update changelog for 0.8.1

Merge branch '0.8.1' of https://github.com/TES3MP/TES3MP into 0.8.1-vr

[Documentation] Update changelog for 0.8.0

[Server] Rename script functions for clearing packet vectors for players

[Client] Stop drag and drop when setting player inventory

[Documentation] Update documentation for 0.6.1

[General] Update version to 0.6.0

[Server] Remove debug message

[Browser] Move password column to the right and shorten its name

Implement spellbook