[FrontEnd] Prevent Score per page from going below 0
[FrontEnd] Prevent all scores from going below 0
[FrontEnd] Implemented storage of flagging text
[FrontEnd] Added boolean to determine whether or not the script is flagged
[FrontEnd] Comments no longer interfere with gesture recog
[FrontEnd] Changed appearance of comments
[FrontEnd] Implemented check to ensure that previousSObjectList is not null
[FrontEnd] Delete pages from SD Card after they have been loaded
[FrontEnd] Corrected check for null exception on mainMarkingScreen
[FrontEnd] Delete all downloaded files after they have been used
[ForntEnd] Removed unused code from TestScriptBrowserActivity
[FrontEnd] Removed long click listener from sCanvas
[FrontEnd] Removed unused code from MainMarkingScreen
[FrontEnd] Disabled back navigation from finalize screen