Merge branch 'release/0.9.1' into develop
Fixed case where base_url was empty
Go back to PSR-4
Fix broken password validation
removed unused functions
detect mode only if  debugger enabled
Removed memcache from auto setup, added memcache server config, removed memcached support
removed memcahed from the list of cache options
Switch to old fashion array declaration in the index.php to allow PHP to parse without failing and then check for the required PHP version (5.4+) [Fixes #36]
disable display_errors in production environment
Merge pull request #43 from rindeal/hotfix/debugger-mode

Some tiny fixes in Debugger
fix for PHP warning "is_file(): open_basedir restriction in effect"

Example:
PHP Warning: is_file(): open_basedir restriction in effect. File(/home/users/.../user/plugins/.gitkeep/.gitkeep.yaml) is not within the allowed path(s): (/home/users/.../:/usr/share/pear/) in .../web/system/src/Grav/Common/Config.php:237
json_encode() is faster than serialize()

ref: http://stackoverflow.com/a/7723730/2566213
accidental commit reverted
Getting away from providing vendor with the repo
Ignoring vendor folder
Including compohser.phar
Autorun composer install when running the grav cli
Changed command suggestion to run for installing the dependencies
Removed vendors from the mapping in SetupCommand