Implemented diacritics toggle

Adds a new setting toggle called "Match Diacritics." When enable (default), there are no changes to current search functionality. When disabled, diacritic marks will be ignored when indexing compendium entries and using the search bar. If desired, this functionality can be extended to entities too by copying line 1243 of module/searchanywhere.js and pasting on line 1031. German and Italian translations for the new setting's title and hint are not provided. Closes #52 (closed).