[12743] Fix some static code analysis warnings and improve performance
[12744] Allow spell cast on non selectable vehicle passengers

This will allow kill credit spells to target vehicle owners (players)

Close scriptdev2/scriptdev2#82
[12745] Implement dummy auras 47563 and 47593
[12746] Fix static analysis const reference performance warnings
[12747] Fix static analysis repeated expression performance warning (1)
[12748] Implement spell effect 19395

Also add missing spells 11756 and 19394. Please note that for spell 11756 only effect0 is implemented. Effect1 it's not mandatory, but would be nice to have in the future.

This will fix quest 2987.
Inspired by the work of @Evildead666
[12749] Update fall information on vehicle unboard

This will prevent taking fall damage
[12750] Allow script command 16 to Play Music using the additional flag
[12751] Implement spell effect 50773
[12752] Revert previous commit.

Spell will be handled by SD2.
[12753] Allow forced cast spells by vehicle to unboard the passenger if required

Partially fix unified-db/Database#2
[12754] Remove support for deprecated VC90

[ci skip]