MDL-31270:Fix php Strict Standards: Creating default object from empty value warning msg in assign_get_recent_mod_activity
MDL-31270: code clean up in assign_get_recent_mod_activity and refix the PHP strict standard msg with stdclass in it
MDL-31270: Fix deprecated get_context_instance function in assign_print_overview
MDL-31270:Fix broken image and format in onlinetext content html when downloading it
MDL-31270: Fix onlintetextsubmission stdclass typo in onlinetext locallib upgrade function triggering strict standard warning
MDL-31270: Fixed undefined variable in convert_grade_for_gradebook function
MDL-31270: Fix missing GLOBAL $PAGE in View_Student_Summary function in locallib.php
MDL-31270: Add batch upgrade and upgrade all to the assignment upgrade tool
MDL-31270: Adding some files that were missed in the last commit for the upgrade tool.
MDL-31270: Edit database install files with XMLDB editor and resave (adding comments)
MDL-31270: Fix submission comment plugin to non allow submission if it is the only sub plugin enabled
MDL-31270: Add support for advanced grading to assignment upgrade code
MDL-31270: Added upgrade code for completion API

Still needs rollback support for advanced grading and completion data
MDL-31270: Add rollback support for advanced grading and completion upgrades
MDL-31270: Fix grade edit coloumn and submmision status in grading table to ensure they update themselves accordingly when grade(s) entered
MDL-31270: Change the display of the grading table to show the submissions status and the grading status
MDL-31270: Language file cleanup and AMOS commands for language strings:

AMOS BEGIN
 CPY [assignment:exportownsubmission,mod_assignment],[assign:exportownsubmission,mod_assign]
 CPY [assignment:grade,mod_assignment],[assign:grade,mod_assign]
 CPY [assignmentname,mod_assignment],[assignmentname,mod_assign]
 CPY [assignment:submit,mod_assignment],[assign:submit,mod_assign]
 CPY [assignment:view,mod_assignment],[assign:view,mod_assign]
 CPY [comment,mod_assignment],[comment,mod_assign]
 CPY [configshowrecentsubmissions,mod_assignment],[configshowrecentsubmissions,mod_assign]
 CPY [description,mod_assignment],[description,mod_assign]
 CPY [duedate,mod_assignment],[duedate,mod_assign]
 CPY [duedateno,mod_assignment],[duedateno,mod_assign]
 CPY [editmysubmission,mod_assignment],[editsubmission,mod_assign]
 CPY [emailteachermail,mod_assignment],[emailgradermail,mod_assign]
 CPY [emailteachermailhtml,mod_assignment],[emailgradermailhtml,mod_assign]
 CPY [errornosubmissions,mod_assignment],[errornosubmissions,mod_assign]
 CPY [feedback,mod_assignment],[feedback,mod_assign]
 CPY [submitted,mod_assignment],[filtersubmitted,mod_assign]
 CPY [graded,mod_assignment],[graded,mod_assign]
 CPY [modulenameplural,mod_assignment],[modulenameplural,mod_assign]
 CPY [newsubmissions,mod_assignment],[newsubmissions,mod_assign]
 CPY [next,core],[nosavebutnext,mod_assign]
 CPY [notgradedyet,mod_assignment],[notgradedyet,mod_assign]
 CPY [notsubmittedyet,mod_assignment],[notsubmittedyet,mod_assign]
 CPY [page-mod-assignment-x,mod_assignment],[page-mod-assign-x,mod_assign]
 CPY [page-mod-assignment-view,mod_assignment],[page-mod-assign-view,mod_assign]
 CPY [preventlate,mod_assignment],[preventlatesubmissions,mod_assign]
 CPY [previous,core],[previous,mod_assign]
 CPY [reviewed,mod_assignment],[reviewed,mod_assign]
 CPY [savechanges,core],[savechanges,mod_assign]
 CPY [showrecentsubmissions,mod_assignment],[showrecentsubmissions,mod_assign]
 CPY [submissions,mod_assignment],[submissions,mod_assign]
 CPY [graded,mod_assignment],[submissionstatus_marked,mod_assign]
 CPY [submission,mod_assignment],[submission,mod_assign]
 CPY [assignment:submit,mod_assignment],[submitassignment,mod_assign]
 CPY [late,mod_assignment],[submittedlateshort,mod_assign]
 CPY [submitted,mod_assignment],[submitted,mod_assign]

AMOS END
MDL-31270: Remove all trailing whitespace
MDL-31270: Whitespaces changes for assignment upgrade tool
MDL-31270: PHPdocs cleanup - no warnings from PHPDoccheck