added from_email defaults to simpleforms extension
removed cache constant from Application file
remove reference to cache constant on construct
config cache defers to the resource manager
remove reference to constants from index.php
ensure the cache provider initialises with the correct directory
replace constant with app reference
removed cache constant from extensions
workaround to set cache path when called via static methods
put the app in closure context
remove timthumb from composer post install
Merge pull request #1281 from jadwigo/master

added from_email defaults to simpleforms extension
Merge pull request #1285 from rossriley/composer-script-fixes

remove timthumb from composer post install
Merge pull request #1284 from rossriley/cache-constant-removal

Cache constant removal