This will delete the local reading settings directory for a specified book, if applicable. If not, the option is hidden.

Better idle sleep time selection

Named pipe repair, minor improvements and other fixes

This bug happened sometimes when the user would go to a specific page in the document or tried to continue reading a PDF from a certain page other than the first one. This commit fixes this that.

This dialog will open if user keeps touch input active on a button from `bookBtnArray` for >= 500 ms.
'Pin' and 'More info' operations are currently not implemented.

This commit also fixes a segmentation fault that would be caused when deleting libraryWidget (Gutenberg) that first appeared in 4a104522.

TODO: Handle what happens when there are no books in the library
TODO: Re-generate database upon exiting USBMS session or books download (libraryWidget)
TODO: Adjust various icon width/height variables depending on the device