Improve generation of vagrant vm
Add gitignore rules
Merge pull request #1146 from nlegoff/vm-improvement

[READY][3.8.6]Improve generation of vagrant vm
Merge pull request #1145 from nlegoff/upd-gitignore

[3.8.6][READY]Add gitignore rules
add --config.interactive=false option for bower
Add aggregable property to metadata fields
Merge pull request #1149 from nlegoff/aggregable-field

[READY][3.9] Add aggregable property to metadata fields
Improve VM build
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
Merge pull request #1150 from nlegoff/fix-vms-build

[3.9] 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
PHRAS-270 #time 6h
nb: exiftool MUST be updated - issue opened
PHRAS-270 #time 3h
erase blank fields when writing metadatas = write back every field of the STRUCTURE, not only fields of the record.