report: tab structure and overview started
report: new fields, reporting by category
report: pie charts added
report: pie and bar graphs for events completed
report: bar and line timeline graphs completed
report: pagination and week/month view on time graphs
report - graph: added years, fiscal years and semesters
report - graph: stackedbar added, getSemestersBetween loop fixed
report: export interface completed
report: exporting CSV files
report: resolves #17, version increased