- fix problem where no one can share when presenterShareOnly is set to TRUE
 - upgrade to gradle 1.7

STEPS
cd ~/dev/tools
wget http://services.gradle.org/distributions/gradle-1.7-bin.zip
unzip gradle-1.7-bin.zip
ln -s gradle-1.7 gradle
vi ~/.profile

export GRADLE_HOME=$HOME/dev/tools/gradle
export PATH=$PATH:$GRADLE_HOME/bin

source ~/.profile
Merge branch 'master' into upgrade-to-gradle-1.7