Update CHANGELOG for v1.3.1
Update CHANGELOG for v1.3.1

Digital-Peak/joomla-vagrant,joomlatools/joomlatools-vagrant,gokuale/joomla-vagrant,joomlatools/joomla-vagrant,joomlatools/joomlatools-vagrant,Fabrik/joomla-vagrant,Fabrik/joomla-vagrant,joomlatools/joomla-vagrant,joomlatools/joomlatools-vagrant,Digital-Peak/joomla-vagrant,gokuale/joomla-vagrant,joomlatools/joomla-vagrant,gokuale/joomla-vagrant,joomlatools/joomlatools-vagrant,Digital-Peak/joomla-vagrant,gokuale/joomla-vagrant,Digital-Peak/joomla-vagrant,gokuale/joomla-vagrant,Digital-Peak/joomla-vagrant,joomlatools/joomla-vagrant,Digital-Peak/joomla-vagrant,joomlatools/joomlatools-vagrant,Fabrik/joomla-vagrant,Fabrik/joomla-vagrant,Fabrik/joomla-vagrant,joomlatools/joomla-vagrant,joomlatools/joomla-vagrant,gokuale/joomla-vagrant,Fabrik/joomla-vagrant