Clean tests

* Moved the slim app creation in a dedicated class
* Moved the file tests in ./tests/ in the right subfolders ./tests/Payutc/*
* Synced the launching of the built-in servers (cas, ginger, server) with the launching of the tests
* Cleaned the test config
* Removed some tab indents
check php version before launching built-in servers
Fix travis before script
Removed psswd from default test conf to make travis happy
Added Payline log folder creation in travis before script
Renamed Payutc\Application to Payutc\WebApp
Added a script to up & down built-in servers
Removed useless file
Removed local config-test from repos
Factorize built-in server launching

* tests/bootstrap.php now call tests/servers.sh script
* test access logs are now in the folder tests/logs
* test payutc logs are also in the folder tests/logs
Update help
Added tests/logs folder in repos
Fixed travis before script
Deactivated SimpleXml warnings for CasTest
Fixed config import in web/index.php
Removed useless parameter
Added absolute path for config inclusion
Merge branch 'master' into config
Merge pull request #290 from trecouvr/config

Clean tests