[Fixed] buffs to only be useable on players - mantis 4508

Change-Id: I78ecef20ef59595d4a7d69683c24bb3aa8916aa3
[Fixed] buffs can now be used on creature pets

Change-Id: I0ee71defc5994a1d3e1e7c37a1d69fbd1cf9045c
Merge "[Fixed] buffs to only be useable on players - mantis 4508" into unstable
Merge "[Fixed] buffs can now be used on creature pets" into unstable