WIP order identities

Allow multiple identities for orders, typically used for storing external identifications, such as an backend (ERP) order id.
Processed comments, added removeIdentity method, adjusted OrderSpec
Sylius install build search index and cache clear
-On initial run of sylius:install #2276 search is broken because the indexes are not built
-During re-runs of sylius:install the cache needs to be cleared before running phpcr's init to remove old workspace
Enforce the size limitation of the short_description field
When creating a translatable product in the administration a
SQL error is generated if this field is too long.
Incorrect english in validation file
Add sylius/contact dependency to ContactBundle
Merge pull request #2283 from diimpp/patch-1

Add sylius/contact dependency to ContactBundle
Allow cascading validation for menu nodes, otherwise it can generate SQL errors
Merge pull request #2281 from mykehsd/feature/TranslationFix-BeMustBe

Incorrect english in validation file
Merge pull request #2279 from mykehsd/feature/I#2276-SearchInstall

Sylius install build search index and cache clear
Merge pull request #2284 from mykehsd/feature/CascadeValidationCmsContentMenu

Allow cascading validation for menu nodes, otherwise it can generate SQL...
Merge pull request #2280 from mykehsd/feature/ShortDescriptionValidation

Enforce the size limitation of the short_description field
Added migration
Fix ability to specify form via class name.
Merge pull request #2285 from Richtermeister/fix-form-via-classname

Fix ability to specify form via class name.
Merge pull request #2243 from inspiran/master

[Order]WIP order identities
Add coupon timestamps
fixed bug #2189 with CMF toolbar
Merge pull request #2290 from neok/cmf_toolbar_menu_fix

fixed bug #2189 with CMF toolbar
Fix coupon generator specs