We should be able to configure a group calendar saying that the pattern
is "from 9:00 to 12:00, repeat every monday morning" with a group
calendar assignment saying "use this pattern from 01/01/2016 until
31/12/2016" and then create another group calendar assignment for 2017
without having to change the periodicity stop date on all presence
periods of the group calendar.

I think it should repeat from group calendar assignment's start date
until min(group calendar assignment's stop date, presence period's
periodicity stop date).

(cherry picked from commit b42a9c112d59454a42c0b5a0fd62d71a7fcd4202)

 - update PresencePeriod.getNextPeriodicalDate with fixes from 6155f7ff
 - do not use addToDate, but simply DateTime arithmetics that unlike addToDate, works correctly

(cherry picked from commit 30e2c1f6cb55ae3dfc4d8c83911b53f38a6cc36d)

because Domain.getRelativeUrl (and Category.getRelativeUrl) cannot be
restrictedTraverse'd

Workaround for bug #20160120-1805D22

The real motivation was to make sure that search match is displayed when searching with Ctrl+F / Ctrl+G

Conflicts:
	bt5/erp5_code_mirror/SkinTemplateItem/portal_skins/erp5_code_mirror/code_mirror_support.xml

codemirror: display an animation in window title so that the window flash when component has been saved.

Use case: save component on one tab, go to "run live test" tab and wait for component to be saved to make sure code runs with latest version

Conflicts:
	bt5/erp5_code_mirror/SkinTemplateItem/portal_skins/erp5_code_mirror/code_mirror_support.xml

This is probably incorrect. I believe ERP5ShortMessage's message_type
handling has to be refactored. I guess this should not be part of the
send API but be a property set on the gateway instance in portal_sms

Only mobyt support this parameter, so this break the compatibility with
essendex

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 nexedi/erp5!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