Added Comments to Model Files

[Ryan-Holden]

My team and I added comments to several files that had very few comments or none at all. We made no changes to the code itself. Commented files:
Baikal/Model/AddressBook.php
Baikal/Model/Calendar.php
Baikal/Model/User.php
BaikalAdmin/Core/View.php
BaikalAdmin/Framework.php

The comments are meant to clarify the purpose of functions that previously had no documentation. They will help new developers understand the code and begin contributing to the project. Any suggestions or improvements to our comments are welcome.

[ByteHamster]

Thanks for your PR. To be honest, I'm not sure if this is a good idea. Most of the comments basically just restate the method name, so they don't really give additional knowledge. At the same time, adding these comments increases maintenance overhead (because the comments need to be maintained and because this change touching files all over the project makes it harder to use git blame)