Also did the following -
1. Changed get_grade_items() so it takes a course parameter.
2. Renamed get_grade() and get_mod_grade() and changed functionality
slightly to use newly introduced class.
3. Do not return a date graded value if there is no grade.
4. Added course grade date as an option to the date element.
5. Fix inconsistency between number of decimals showing for a grade
between the drag and drop interface and the PDF.
1) Every certificate is a template. Before a user would create a certificate then had
the option to save it as a template. This could potentially be chaotic with numerous
users creating templates, making the template system a mess. Now, rather than creating
a certificate first, then saving it as a template, you are always creating a template.
Each template is associated with a context, so depending on where you are creating it
the context is different. This means users in the CONTEXT_MODULE context are creating
a template specific to that module, where as a user creating a template in the
CONTEXT_SYSTEM context would be creating a general template that can be used by others.
This meant we can remove the 'customcert_template_*' db tables. Yay - no duplicated
tables.
2) Created new helper classes and moved functionality there.
3) Moved files to classes/ for autoloading.
4) General tidy up.
The images were not loading in the filemanager.
This meant that when the element was saved the
images would be deleted for that course, affecting
existing image elements as well.
It may not be the case where everyone wants the name of the grade item to be displayed on the page next to the grade. However, if they do they can simply add another element to show the desired name.
This variable determines whether we are viewing the custom certificate for a particular user, or if we are simply previewing it. This may be needed for some elements. For example, an element may retrieve the data for when the custom certificate was issued, but if the user has just set up the custom certificate and no issue has been created then this data is missing, so in this case we pass that the user is previewing the custom certificate so other data can be shown.
