it was a coincidence that the first event was set by edit_workflow during
initialization: it was due to workflow list not sorted in chains_by_type

Variable type is now called Workflow Variable
Add automatic_update property on variables
Rename initial_value to variable_value

- general refactoring (renaming variables and methods for better consistency,
improving views, fixing tests, ...)
- performance improvements
- rework of guards
- rewriting permission/roles matrix on state
- use patched version of updateRolesMappingFor and rework it for cases of many
workflows setting different roles for the same permission
- fixes of troubles when having prefixed state/transition/script in new
workflows
- ...

MonthlyRangeMovementGroup: make tested property list configurable, whose default is ('start_date', 'stop_date').

Fix inconsistencies from gadgets

/cc @jerome 

/reviewed-on nexedi/erp5!225

erp5_knowledge_pad: Fix inconsistency with preferred_height and preferred_width in google_maps gadget

ERP5Type.ConsistencyMessage for PropertyTypeValidity type_check on portal_gadgets/google_maps (message: Attribute preferred_width should be of type string but is of type <type 'int'>)
ERP5Type.ConsistencyMessage for PropertyTypeValidity type_check on portal_gadgets/google_maps (message: Attribute preferred_height should be of type string but is of type <type 'int'>)

erp5_knowledge_pad: Fix inconsistency with preferred_height and preferred_width in google_calendar gadget

ERP5Type.ConsistencyMessage for PropertyTypeValidity type_check on portal_gadgets/google_calendar (message: Attribute preferred_width should be of type string but is of type <type 'int'>)
ERP5Type.ConsistencyMessage for PropertyTypeValidity type_check on portal_gadgets/google_calendar (message: Attribute preferred_height should be of type string but is of type <type 'int'>)

erp5_knowledge_pad: Fix inconsistency with preferred_height and preferred_width in google_search gadget

ERP5Type.ConsistencyMessage for PropertyTypeValidity type_check on portal_gadgets/google_search (message: Attribute preferred_width should be of type string but is of type <type 'int'>)
ERP5Type.ConsistencyMessage for PropertyTypeValidity type_check on portal_gadgets/google_search (message: Attribute preferred_height should be of type string but is of type <type 'int'>)

ERP5Type.ConsistencyMessage for PropertyTypeValidity type_check on portal_gadgets/clock (message: Attribute preferred_width should be of type string but is of type <type 'int'>)
ERP5Type.ConsistencyMessage for PropertyTypeValidity type_check on portal_gadgets/clock (message: Attribute preferred_height should be of type string but is of type <type 'int'>)

erp5_payroll_l10n_fr: reflects change in entreprise/employer from paysheets into the dialog aggregating paysheets for DSN social reports

/reviewed-on !229

erp5_calendar: Leave Request Period only use services as Resource

erp5_travel_expense: In expense report, remove useless rsvp.queue, do not overwrite special character

synchronize automatically data block web site

A Localisation Record is created when submit a expense record
only one received localisation record per user

erp5_travel_expense: localisation search should not prevent image preview

erp5_travel_expense: make sure localisation gadget is loaded

erp5_travel_expense: don't create localisation record when location is undefined

erp5_travel_expense: naming convention

erp5_travel_expense: Have Projects availables in Expense, define group on images and set source_section

epr5_payroll: update social_declaration view as transactions can be aggregated by several social declarations