[added] vehicle customization

Change-Id: I7884c78030dcdeae797a31e6200855fbb7669780
[fixed] Resist buffs to display difference if existing buff exists -
Mantis 4349

Change-Id: I1960bf547eb90b55f7b42427332d0aa35696bece
Merge "[added] vehicle customization" into unstable
Merge "[fixed] Resist buffs to display difference if existing buff exists - Mantis 4349" into unstable