Merge pull request #970 from sexnothing/develop

Remove bootstrap require jQuery load
Date format fix
Fix for boot load typo
Merge branch 'develop' of https://github.com/pi-engine/pi into develop
Merge pull request #971 from sexnothing/develop

System module theme install update
Moved engine public resource to `www/resource` folder
Merge branch 'develop' of https://github.com/pi-engine/pi into develop
Fixes path locating for symlink
Restore bootstrap file
Merge asset into public
Bootstrap files clean