Support having multiple operational limits groups active at the same time

[alicecaron]

Describe the current behavior

Within a security analysis only one operational limits groups among the active ones is used to check for limit violations.

Describe the expected behavior

Within a security analysis all the active operational limits groups are used to check for limit violations.

Describe the motivation

Since issue core#3703 it is possible to have several active operational limits groups at the same time to check for limits violations, we want to be able to check for all the active groups not only one as before when only one "selected" operational limits group was possible.

Extra Information

• is blocked by issue core#3703 that model the LimitReduction list of groups on which the reduction should be applied.
• loop on the active operational limits groups when checking for limit violations in pre contingency, post contingencies and post contingencies after actions (in LimitViolationManager:detectViolations ?). Limit reductions are given in the 3 usages of the method