Edit stylings to fit 3 buttons in plan details
Add extra button to download shapefile in addition to index file
Fix issue in shapefile generation with non-ascii characters

Some of the attribute fields in foreign languages include
ascii characters which can cause this to error out. This
code tries to convert them to ascii characters if there is
an error.
Merge pull request #446 from notthatbreezy/topic/add-shapefile-download

Topic/add shapefile download