Update fn_welcomeNotification.sqf

Edited Information - Requesting Color Coding
Update briefing.sqf

Modified our briefing to fit our goal.
New Icons - Something Fresh

Changed icons to enhance the users experience within the server.
Update fn_welcomeNotification.sqf

TESTING COLOR CODING
Fixed Briefing and Description
Textures and Sounds Added In
Added BTS Markers to Map
Removed Color Coding - Not Working
Correct Textures
Merge remote-tracking branch 'origin/SniperNoSniping'