Less talking and more doing. That’s what officials from international technology company Mozilla promised Thursday as the company launched a $150,000 fund to figure out ways to practically apply Chattanooga’s gigabit Internet to solve real, local problems. The Mozilla Gigabit Community Fund will give grants ranging from $5,000 to $30,000 to teams of Chattanoogans who promise to create tangible applications from Chattanooga’s gigabit network during 2014.