Commented remove arrows button, and cleaned up extra space between map navigation buttons
mapUI.js now works with or without the remove arrows button
Added space between the map navigation buttons for mobile users
Small errorfix for the map preview
Turn preview a bit more bulletproof...
Show the preview-icon on the board only if User is a Member of the game. (Commit 5a7c9bc9b197b3596992cba1c2524db15adb51fa from Sleepcap)