[FIX]Web: Fixed the issue of group and search_default propagated in context to next action while executing button action.
[FIX]Web: Refixed the issue of context propagation, we must not remove search_default and group_bys of current action context, previous fix was removing action context, improved the fix.
[FIX]Web: Refixed the issue of context propagation, we must not remove search_default and group_bys of current action context, previous fix was removing action context, improved the fix, also added pairs and object function for sake of simplicity.
[FIX]Web: Refixed the issue of context propagation, also removed the view references of current dataset.
[FIX] update to latest version saas code with updated underscore lib
sync with 7.0
[FIX] view: avoid propagation of context while executing an action

As the action could lead to unrelated model, keeping the defaults, groupby and ref do not make sense.
Backport of saas-2 revision 3872, 3891, 3892, 3893 and 3905