fixes formatting of new introduction section
displays staff summary in loan search page
corrects intro display in loan search page
fixes title in loan profile pages to use translations if provided
removes extra space above city in loan search page
Add dev implementation for getCardCode12

Closes #102
Add `array_get` utility function
Remove php notices from borrower registration form
Add missing columns to loanapplic schema
Add loan_categories table, loan_category_id column
Use string instead of (undefined) constants
Add missing dollar sign
Fix $grace definition

$grace used before it was defined
Small fix
Fix input values in borrower registration form
Add ->getLoanCategories
Add category to loan application/edit form
Add $loan_category_id, $country_code argument to getOpenBorrowers
Add sort by country, loan category on Lend page

See #72
Update #sort-bar style