Fix EZP-19904: Admin interface redirection to raw treemenu JSON output

This is a folloup fix to #484 which was merged in 80c299f.
Implement EZP-21323: Add instructions / link to older webin/flow/plain packages in setup wizard
Merge pull request #711 from ezsystems/EZP-21323

Implement EZP-21323: Add link to older packages in setup wizard
Fix EZP-21410: object name limit does not support multibyte charset

Trimming has been changed to use a preg_replace as found here:
http://stackoverflow.com/questions/4166896/trim-unicode-whitespace-in-php-5-2
Merge pull request #715 from ezsystems/EZP-21410

Fix EZP-21410: object name limit does not support multibyte charset
EZP-21408: Use composer autoloads for ezc, if available

No need for an own config for Travic CI anymore
Merge pull request #712 from jeromegamez/EZP-21408_ezpgenerateautoloads

EZP-21408: Add composer autoloads in ezpgenerateautoloads.php in pure legacy context
Merge pull request #716 from ezsystems/EZP-19904

Fix EZP-19904: Admin interface redirection to raw treemenu JSON output
Fix EZP-20880: Cache not cleared on role edits
Updated Travis CI status image to point to the correct project
Merge pull request #719 from ezsystems/EZP-20880_missing_cache_clear_event

Fix EZP-20880: Cache not cleared on role edits
Merge pull request #720 from jeromegamez/travis_status

Updated Travis CI status image to point to the correct project