URL API to start Gallery Analytic Apps

[jischebeck]

Extend the Gallery, so that you can pass a set of parameters to Analytic Apps changing both look and feel as well as feedback of the App, i.e. allow to call the App "Add Two Numbers" without borders and jumping direct to the question page.

https://gallery.alteryx.com/#!app/Add-two-numbers/5cc704bb826fd31188cf8ad8/run?header=N&sidebar=N&di...

sidebar=Y|N     allows to hide sidebar (home, districts,...)

header = Y|N   allows to hide header line

questions = Y|N    skip question page (only if no questions are available)

direct = Y|N       directly starts App (i.e. directly jumps to the question page)