misc refactors and docstrings addition

server/app/db/__init__.py

@@ -1,3 +1,8 @@
+"""
+This module creates and initiliazes a MongoDB instance. It also contains the
+`convert_one()` and `conver_many()` methods for converting MongoDB cursors to Python dicts.
+"""
+
 import pymongo
 import json
 from bson import json_util

server/app/db/albums.py

@@ -1,3 +1,8 @@
+"""
+This file contains the Album class for interacting with 
+album documents in MongoDB.
+"""
+
 from app import db
 from bson import ObjectId
 

server/app/db/artists.py

@@ -1,3 +1,7 @@
+"""
+This file contains the Artists class for interacting with artist documents in MongoDB.
+"""
+
 from app import db
 from bson import ObjectId
 

server/app/db/playlists.py

@@ -1,3 +1,7 @@
+"""
+This file contains the Playlists class for interacting with the playlist documents in MongoDB.
+"""
+
 from app import db, models
 from bson import ObjectId
 

server/app/db/trackcolors.py

@@ -1,3 +1,7 @@
+"""
+This file contains the TrackColors class for interacting with Track colors documents in MongoDB.
+"""
+
 from app import db
 
 

server/app/db/tracks.py

@@ -1,3 +1,7 @@
+"""
+This file contains the AllSongs class for interacting with track documents in MongoDB.
+"""
+
 from app import db
 from bson import ObjectId