add silence removal using pydub and multithreading

+ fix favorites endpoint returning items less than limit
+ add endpoint to remove get silence padding
+ add 'the ulitimate' and 'compilation' to compilation album filters
+ misc

app/lib/pydub/.github/issue_template.md

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+### Steps to reproduce
+
+### Expected behavior
+Tell us what should happen
+
+### Actual behavior
+Tell us what happens instead
+
+### Your System configuration
+- Python version: 
+- Pydub version: 
+- ffmpeg or avlib?: 
+- ffmpeg/avlib version: 
+
+### Is there an audio file you can include to help us reproduce?
+You can include the audio file in this issue - just put it in a zip file and drag/drop the zip file into the github issue.
+