[z2103] Fix broken gossip_menu_option due to [z1972]. Thanks Salja for reporting
[z2104] Improve target selection for TARGET_DUELVSPLAYER

Also set the spell to be Redirected only if the spell is actually redirected

(based on commit [12150] - 76312ff)

(based on commit [s1724] - a9a7f80)
[z2105] Improve EffectTeleUnitsFaceCaster and target-selection for position targets

* Let EffectTeleUnitsFaceCaster use a destination for teleporting if provided
* Expect to add caster for TARGET_RANDOM_NEARBY_LOC, TARGET_RANDOM_CIRCUMFERENCE_POINT only for summon spells (or similar spells)

(based on commit [12151] - 60827bd)

(based on commit [s1725] - d589c6d)
[z2106] Let GetMapEntranceTrigger and GetGoBackTrigger work in a better defined order

Actually as this is still no total order (and it is basicly impossible to define a reasonable total order for areatrigger_teleport) it is not well defined, but probably good enough for all cases

(based on commit [12154] - 6bfcef0)

(based on commit [s1728] - 6e468ea)