Diary v2.0.0

Diary is based on a highly modified version of the Journal plugin. It allows a user to create a new entry each day. Each entry can be
individually rated, with results being shown based on the selected aggregate type of rating. Currently, the user can edit any entry, but cannot start a new entry on a skipped day. Weekly course format can use the, Days available, setting to control entry edit access. Open time and Close time, can be used for other course formats, to control entry edit access. When a Diary is closed but accessed by the user, it will automatically display all entries made by the user, along with the rating as well as the date and time the activity was closed for editing. A teacher can still rate and provide feedback to entries when a Diary is closed for editing. This release includes a fix for the backup and restore processes.