Importing improvements to Ur/Web Meta library
Upgrade Ur/Web version, and improve installer script to check that the right version is installed before skipping reinstall
Fixed Lwan
Fixed cpoll
Fixed wt
Fixed Urweb
Updated the README.md

We were missing some important steps in setting up a
vanilla environment.
Fixed Lapis
Updating the compiled version as well
Added gitignores
Fixed a few more DB issues
Remove prior vendor folder
Move PHP's composer to proper directory
Update config to remove spurious warnings
install composer.par directly under IROOT
add version argument to PHP installation
Fix yii2 dependency installation

a prior commit removed the vendor directory that was erroneously added into this
repo, and this commit adds that vendor directory back using the composer
dependency management system
Lock php-yii2 assets to a known-good state
Update PHP read to explain composer usage
Update PHP-yii2 installation