Add audio playback to beat library view

Fixes #2
- Installed pafy and youtube-dl
- Modified pafy to fix dislike bug. (Modified module will be included in repo)
- Add audio_url to Video database model and inlcuded in add_uploads_to_database()
- Changed additionallinks to head (Jinja templating)
- Added Favicon
- Incorporate a while loop to deal with pafy's "dead link" problem

app.py

@@ -33,7 +33,7 @@ def home():
 @app.route('/') # START PAGE
 @app.route('/beats')
 def beat_library():
-    videos = Videos.query.all() # Consider updating this to only send through the data from 'videos' that is needed. Better to be more specific, in case I add any kind of sensitive information to this database model in future.
+    videos = Videos.query.all()
     return render_template('beat-library.html', videos=videos)
 
 @app.route('/beats/<video_id>')

credentials.py

@@ -20,7 +20,7 @@
     if creds and creds.expired and creds.refresh_token:
         creds.refresh(Request())
     else:
-        with open('credentials.json', 'w') as f: # Creates a credentials.json file from the string in the environment variable, BEAT_WEBSITE_OAUTH_CREDENTIALS. This string was obtained from a json file downlaoded from the google developer console.
+        with open('credentials.json', 'w') as f:
             f.write(BEAT_WEBSITE_OAUTH_CREDENTIALS)
         flow = InstalledAppFlow.from_client_secrets_file('credentials.json', SCOPES)
         creds = flow.run_local_server(port=0) # IS THIS GOING TO WORK ON A LIVE SERVER?

models.py

@@ -11,6 +11,7 @@ class Videos(db.Model):
     video_tags = db.Column(db.Text)
     beat_mixdowns = db.Column(db.Text)
     beat_stems = db.Column(db.Text)
+    audio_url = db.Column(db.Text)
 
     def __repr__(self):
         return f"\nvideo_id = {self.video_id}\nvideo_title = {self.video_title}\nvideo_publishedAt = {self.video_publishedAt}\nvideo_thumbnail = {self.video_thumbnail}\nvideo_description = {self.video_description}"

pafy_modified/__init__.py

@@ -0,0 +1,14 @@
+__version__ = "0.5.5"
+__author__ = "np1"
+__license__ = "LGPLv3"
+
+
+# External api
+from .pafy import new
+from .pafy import set_api_key
+from .pafy import load_cache, dump_cache
+from .pafy import get_categoryname
+from .pafy import backend
+from .util import GdataError, call_gdata
+from .playlist import get_playlist, get_playlist2
+from .channel import get_channel