Added the referral report exports.
Merge branch 'zhcard_dev' into reports
PEP 8 Formatting.
pep8 formatting.
Pep 8 autoformatting.
Merge pull request #145 from AndreLesa/home_page

Home page
Merge pull request #146 from AndreLesa/zhcard_dev

Zhcard dev
Merge branch 'zhcard_dev' into reports
New report pages.
Merge pull request #147 from AndreLesa/reports

Reports
Pep 8 formatting.
Added errors page.
Merge pull request #148 from AndreLesa/reports

Reports
Bold and Underline the chart titles.
Merge pull request #149 from AndreLesa/home_page

Bold and Underline the chart titles.