fix #30
Merge pull request #32 from PuZheng/flask-report-30

fix #30
Merge branch 'flask-report-19' into flask-report-33

Conflicts:
	flask_report/tools/create_data_set.py
partial
partial
Merge branch 'flask-report-33' of https://github.com/PuZheng/flask-report into flask-report-33

Conflicts:
	flask_report/data_set.py
	flask_report/report.py
partial
fix #33
Merge pull request #35 from PuZheng/flask-report-33

Flask report 33
partial
fix #37
Merge pull request #39 from PuZheng/flask-report-37

fix #37
Merge branch 'master' into flask-report-19
fix #37
Merge pull request #40 from PuZheng/flask-report-37

fix #37
Merge branch 'master' into flask-report-19
fix #41
Merge pull request #42 from PuZheng/flask-report-41

fix #41
partial
add a display option of report to show all the data