Implementing issue 131. Changing share accounts LOV+checkbox to a modal form dialog. User must accept offline access token store for share level 3 and 4. Adding an email address for friends suggestions

131) add share accounts options:
     0) not shared = blank
     1) share balance
     2) 1) + share friend lists
     3) 1) + 2) + save access token for offline friend list refresh
     4) 1) + 2) + 3) + single sign-on
     5) mixed sharing with 0), 1), 2), 3) and 4) user accounts
     change share accounts checkbox to a share accounts LOV