Clean up annotation details

- changed variable name from annotation.details to annotations
- added report.X.annotations
- changed values from 2, 1, 0 to full, sparse, none
- made reportdateformat available in timesheet

src/main.h

@@ -102,7 +102,7 @@ int handleReportGHistory (std::string &);
 int handleReportCalendar (std::string &);
 int handleReportStats (std::string &);
 int handleReportTimesheet (std::string &);
-std::string getFullDescription (Task&);
+std::string getFullDescription (Task&, const std::string&);
 std::string getDueDate (Task&, const std::string&);
 
 // custom.cpp