Merge pull request #143 from AndreLesa/zhcard_dev

Zhcard dev
Corrected bug where help messages where assumed to contain motherIDs
and would cause a crash.
Merge pull request #144 from AndreLesa/help_message_mapping_bug_fix

Corrected bug where help messages where assumed to contain motherIDs
PEP 8 formatting for homepage view.
Added the referral reasons pie chart.
Upedated the header color and tab colors/hover.
Made header changes  global.
Improved date input size
Merge branch 'home_page' into zhcard_dev