Invert all assertion arguments in tests

Apparently TestNG uses (actual, expected) as opposed to JUnit's  (expected, actual) for assertions. This commit inverts the order of all those arguments.
Fix 'FunctionalMetaPropertyTest.propertyType_compareWithIntendedType_same'

The test for 'FunctionalMetaProperty' used the wrong type token for the creation of an 'int' meta-property, which is now fixed.
Add annotations to 'FieldBackedTestBean'

Method annotations are not inherited from interfaces to implementing classes, so the annotations were also placed on the implementing methods.
Reduce strictness of annotations test in 'AbstractMetaPropertyTest'.

It became obvious that the general test for the implementation of 'MetaProperty.annotations()' was still too strict as it required exactly one annotation of the correct type. But the straight forward implementation of 'MethodMetaProperty.annotations()' would return two instances because it queried the get and set methods for annotations. Only having one annotation does not look very promising because there seems to be no way to place it such that all imaginable implementations would return it.

Instead the test was softened to only expect at least one annotation (and only ones of the correct type).
Implement both 'MethodMetaProperty.annotations' methods
Add test for 'MetaProperty.annotations(Class<A>)'

'AbstractMetaPropertyTest' now also tests whether the filtered annotations method works on a basic level.
Add test for 'MethodMetaProperty.annotations()'
Add test for 'MethodMetaProperty.annotations(Class<A>)'
Clarify method names in 'MethodMetaPropertyTest'
Test 'FieldMetaProperty.annotations()' and 'annotations(Class<A>)'
Test 'FunctionalMetaProperty.annotations()' and 'annotations(Class<A>)'
Improve stream handling in tests

The tests for all implementations of 'annotations()' and 'annotations(Class<A>)' use streams to verify the returned annotations. Their handling was changed so that it better reveals the test intention and unified across all such tests.