Major rewrite

• Code maintenance, almost rewrote the entire addon
• Added a notepad functionality, which can be organized in categories
• Fixed lua errors when a note got changed in a guild which you didnt have note edit permission in
• Made the queue when multiple members join in a short amount of time more robust. Should now be consistently 10s between each welcome sequence
• added a tooltip in the guild roster row for notes which are not the same as the saved note.