Parse the song data to populate the songs table, fixes issue #4

SQL/populate_songs.py

+# run in Django shell ONLY!!!
+# python manage.py shell
+# >>> exec(open('./SQL/populate_songs.py').read())
+
+from core.models import *
+
+def extract_song_title(s):
+    clean = []
+    i = 1
+    for t in s.split(' ÷'):
+        if t == '': continue
+        u = t.strip('\n').split()
+        if u[0] == '.flac' or u[0] == '.mp3' or u[0] == '.dts':
+            clean.append(' '.join(t.strip('\n').split()[2:])[:-len(u[0])])
+        i += 1
+    return clean
+
+def prettify_genre(g):
+    return ', '.join([h.replace('_',' ') for h in g.split()])
+
+for song in Song.objects.filter(song_name__startswith="."):
+    songlst = extract_song_title(song.song_name)
+    for e in songlst:
+        Song.objects.create(song_name=e, genre=prettify_genre(song.genre), artist=song.artist, album=song.album)
+    # uncomment the next line if you want to delete the original entry after parsing
+    # song.delete()
+
+# if something messed up above, uncomment these lines
+# for song in Song.objects.exclude(song_name__startswith="."):
+#     song.delete()
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