Typo fix
Added support for specified session ID in session start per issue #1205
Enable `defer` attribute for js by default per issue #1240
Merge pull request #1250 from voltan/develop

Add select template option
Added `displayfeatures` for GA per issue #1247
Merge branch 'develop' of https://github.com/pi-engine/pi into develop
Update README.md
Cleaned head title logic per issue #1253
Cleaned head title logic per issue #1253
Fixes issue #1256 by sychncronizing with ZF2 dev branch
Restored `defer` attribute for js loading
Added comment post rendering options per issue #1257