Improve vm build
Update travis
Merge pull request #1152 from nlegoff/better-travis

[3.8.6] Update travis.yml
Merge pull request #1151 from nlegoff/fix-vm-build2

[3.8.6] Improve vm build
PHRAS-275 #fix client_max_body_size for nginx
PHRAS-272 #fix database connection if no database provided
PHRAS-194 #fix update po template
update locales
Move crossdomain generator command to bin/setup