Mobile Map - Add Help Popup (Displays in fullscreen)

[Pujapuppy]

1. Create a popup that gives user instruction on how to exit the fullscreen mode. This popup displays in fullscreen mobile view. (HTML in the attached doc)
2. On click of the close button, the popup should close.

Design Link: http://baaqmddesign.azurewebsites.net/Drawing_Tool/MobileMaps/MapHelpPopup.html

MobileMapHelpPopUp.docx

[robgaston]

@Pujapuppy I've added this control to the map, you can see it in action here when you enter fullscreen mode. it should only show up the first time you enter fullscreen in a given session.

the styles for this control, however seem a bit problematic. i was able to get it positioned approximately right on deskyop, but it doesn't show up on mobile at the moment. could you please take a look at the stylesheets and suggest some fixes? thanks!

[Pujapuppy]

@robgaston I updated the styles for the help popup and the "Tap to Expand". Both styles.scss and mobile.scss are updated here: https://drive.google.com/drive/folders/1v7w5JXgdnD4ilb9OWvXFP1u2ce3xLEzK?usp=sharing. I also put the latest icomoon font in google drive - (the close icon isn't displaying on the help popup)