* Fixed an issue where sometimes when loading the next page, the pagination area wouldn't be properly setup due to a missed rendering cycle
* Refactored BookController to thin it out and refactor some of the functions to apply IOC. Added some split query statements on a few queries.
* Added Split Query to many queries
* Added a visual indicator for loading state of PDF. Will spruce up css later.
* Added back in logic
* Fixed flash of white when refreshing browser
* Hooked in a loading progress bar for the pdf reader
* Close the pdf reader when pressing ESC
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