~earboxer/prosongsa

submodules: Add ccharter-c
song: fix pgsql crash on random song
gemini: Add favicon.txt
css: Use symlinks instead of webpack
ccharter script: Add as submodule
laravel: Update to laravel 7
config: Don't output sensitive info on PrettyPageHandler
misc improvements
* Migration: Drop songs.text column
* Song: Transition to file-based storage for text field
misc gemini additions
* Song: Add audios
*playlist: add/reove songs
Playlist: Add playlist page
Gemini Home: Add random song button, sort by id
chordsdata: update
* Chords: Conform to the chordsdata better
homepage: add server-side sorting
misc changes
gemini: show chords based on transposition
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