[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
[RVT] Revert revision 4128 as a slightly different fix for lp:1101840, 1263888 is committed in upstream
[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