[FIX]Fixed the issue of reference field throws traceback that view is undefined, the reason is that reference field passing DefaultFieldManager while creating instance of many2one widget and DefaultFieldManager is eventually extending instance.web.widget not instance.web.form.FormWidget and hence DefaultFieldmanager will nto having view attribute, instead of calling self.view.do_onchange, trigger changed_value which is going to do the same job.
[FIX] FieldMany2One: avoid error when saving changes in popup from a related fields (opw 606601)
[FIX] only hide the export button (and not all the config buttons) in graph view when the module xlwt is not installed (addon web)
[FIX] disable export to xls button in graph view when there are no data to export, this prevent a crash (addon web)
[FIX] in graph view, save the scrolling position and use it when redrawing the table (addon web_graph)
[FIX] correct fix for the scrolling problem in graph view: the view now saves its scrolling position before redrawing itself (addon web_graph)
[FIX] correct the scaling problem of graph bar charts: nvd3 needs a numeric value and was given a [value].  Also, improves the margin of bar/line/pie charts (addon web_graph)
[FIX] fix line chart x-axis labels: it now correctly uses the name of the row, and not a number (addon web_graph)
[FIX] web: abitility to do exact id matching with child_of operator for searchs on many2one fields
[MERGE] Forward-port of latest 7.0 bugfixes, up to rev. 4179 revid:dle@openerp.com-20140422150918-nxv2v4bcvi6u3v6g
[MERGE] graph view: multiple minor/usability fixes
[FIX] Force zindex for elements which should be at top of a modal window.
[FIX] web: list view: fixed button behavior
- icon-like behavior is the default behavior
- text-based buttons (using btn_txt class) are used whenever no icon is given to the
button in a list view.
This way the previous behavior is always the default behavior, and the css modifications are
done only for the text-based buttons, avoiding side-effects.
[FIX] /web/login restore request.uid in case of authentication failure
[FIX]while everything is not adaptative, leave overflow-y on modal body
[MERGE] forward port of branch saas-3 up to revid 4004 dle@openerp.com-20140422160712-iq4yur3jmw5n01ar
[FIX] (partially) fixes a concurrence problem in graph view

The graph view is asynchronous when updating data.  It is not safe when 
the user tries to update quickly the group bys (for example, when adding two 
group bys in quick succession).  

This patch partially fixes the problem: it makes sure that two concurrent updates 
will be correctly serialized.  However, it is not a complete fix: the crash can still happen
when three or more updates are quickly done.  A complete solution require some more work in 
keeping tracks of an update queue and serializing properly the updates. (will be done in trunk)
[FIX] Allow to use attendee_people without use_contact. Allow to use an avatar in each event distinct from sidebar. Allow False to hide avatar in sidebar.
[FIX] export: make the 'Close' button works fine with modal
[FIX] web: reset active_model, id, ids on executing button of type object