removed incorrect code from resolve tests

Resolve tests had a functionality that for primary constructor parameters
 class A(val x: Int, y: Int)
 `$x` was resolved to property descriptor while `x` was resolved to value parameter descriptor.
But it worked incorrect (see tests changes) and was senseless because 'x' in code always resolves to property descriptor.
So it was dropped.
restored priorities
members with invoke have more priority than extensions
KT-3189 Function invoke is called with no reason

prioritize tasks specially for invoke

 #KT-3189 Fixed
 #KT-3190 Fixed
 #KT-3297 Fixed
removed method 'isClassObjectAValue'

There are no sensible usages of it.
Presence of class object can be determined by 'getClassObjectDescriptor() != null' check
do not need to check stand-alone class object for class,
 when it's on the left hand side of dot it is analyzed in 'getIdForImplicitReceiver' (test added)