[TECH SUPPORT] LPS-45811 Missing Action button on Site Membership page

Hi Tibi,

I have explicitly put the ASSIGN_MEMBER check for the second URL, however it is not necessary in the current use case because the user should have ASSIGN_MEMBER permission when he gets to the page which contains these action buttons. Though I believe this way it is better/safer since the same action jsp can be reused in the future.

Please review the changes.

Thanks,
Ákos