Behaviour changes:
* Enable searching local sources with no visible panels by default
* Add some clarifying help to the 'Exclude trailing brackets' search option

Bug fixes:
* Fix automatic removal of trailing dots and spaces from lyric filenames
  * This behaviour is intentional on directories but not file names
  * Users with existing lyric files that have had trailing dots or spaces
    removed may need to rename those files for OpenLyrics to find them.
* Fix being unable to load or save some file paths from portable fb2k
* Fix requests to Metal-Archives all returning 403
* Fix logs sometimes being spammed with warnings about missing UIE panels
* Fix an assortment of log lines that could be a little misleading
* Fix possible log spam during startup
  * There is now an extra level of 'debug logging' that uses the existence
    of a file in the fb2k config directory.
  * Logs emitted early in startup will only appear if this file is present