ticket/BAP-2755: Inits ContactUs bundle

- Adds base controller to manage contact requests
- Adds entities for contact request
- Adds routing
- Adds base datagrid configuration
- Adds navigation
ticket/BAP-2755: embedded forms
 - embedded forms crud operations
 - contact request entity update
ticket/BAP-2755: Improves ContactRequest functionality

- Adds create/update/delete/view feature;
- Adds translations;
ticket/BAP-2755: Adds ContactRequestType as embedded form
ticket/BAP-2755: Changes navigation according comments
ticket/BAP-2755: embedded forms
 - redundant script removed from ContactUsBundle
ticket/BAP-2755: Adds filters and sorters for contact requests datagrid
ticket/BAP-2755: embedded forms
 - added EmbeddedFormTypeInterface
 - dynamic loading of default css and default  success message
 - watching form state and showing confirm box if css and message differ from default
ticket/BAP-2755: embedded forms
 - base form type (channel aware form)
ticket/BAP-2755: Adds ACL for contact requests

- Adds refactoring of translations according accepted standards
Merge remote-tracking branch 'origin/master' into ticket/BAP-2755
ticket/BAP-3001: Adds missing tests for ContactUsBundle
ticket/BAP-2755: embedded forms
 - contact us form look like http://demo.magentocommerce.com/contacts/
Merge branch 'ticket/BAP-2755' of github.com:laboro/crm into ticket/BAP-2755
CRM-761: Incomplete data import
CRM-761: Incomplete data import - CR changes
CRM-761: Incomplete data import - CR changes
CRM-761: Incomplete data import - CR changes
CRM-761: Incomplete data import - CR changes
CRM-658: Call duration in Log Call form should be displayed in time period format
- fix a bug