* Replace unchecked casts with checked casts * remove Utility.finViewById * Fix return activity checking * Create UserAction enum * Fix typos * Add instrumented test for error info * ErrorInfo make fields final * Log exception using logger * Add inherited annotations * Resolve deprecation warnings * Remove unused methods from utility * Reformat code * Remove unused methods from Utility and improve getFileExt * Create OnScrollBelowItemsListener
* Fix permission at some places * Fix access problem for downloaded files with external player * Store finished Downloads * Remove binding to DownloadService just to download a file * Javadoc * Code improvements
