MDL-45452 Course completion report: "Excel-compatible" output should have Excel-compatible dates
Merge branch 'master' of git://git.moodle.org/moodle
Merge remote-tracking branch 'origin/master'
MDL-40457 Question Bank: Allow plugins to add columns to question bank view

Allows plugins to add columns to the question bank view by extending core_question\bank\column_base
Columns to display are set in $CFG->questionbankcolumns. Columns are namespaced and autoloaded to support this.
MDL-40457-question_bank_plugins_columns: Remove binary corruption fro the end of two clumn class files.
Merge remote-tracking branch 'origin/MDL-40457-question_bank_plugins_columns' into MDL-40457-question_bank_plugins_columns