add persistent files and clear whole root directory on core update
add .scrutinizer.yml export-ignore to .gitattributes
also restore persistent files after core uninstall
only call deployEntry(core) when coreEntry !== null
added test for remove symlinks
remove some Fullstacktests due to Travis Memory Limit
added tests for resolveMappings and cleaned up resolve Mappings
add .htaccess and .htpasswd to persistent core files
closes #8
also backup persistent files on core install
updated readme
Finish 1.0.0-beta6