!guess: Initial version. Guess alliances for planets based on tracked fleet movements.

(cherry picked from commit e0f5254c89f18485e8994fdaf131e22f24f09329)
!guess: Add an optional parameter to limit results. Default is 5.

(cherry picked from commit 4a09e8e3b291ec82df1d6ae9519821fe48f812ee)
!covop: Change default permission to "member", as intel is used.