fix to filesystem locations
Merge pull request #1915 from rossriley/fix-install-handler

fix to filesystem locations for asset installer
Use SSL on extensions.bolt.cm
point to new location
Merge pull request #1918 from rossriley/fix-config-dist-copy

point to new location
Merge pull request #1917 from GawainLynch/hotfix/extensions-ssl

Use SSL on extensions.bolt.cm
fix to location of app dir in composer installs
Merge pull request #1919 from rossriley/fix-composer-appdir

fix to location of app dir in composer installs