Implementation for issue #15.
Signed-off-by: Nikola Olah <nolah@WS-NOLAH-PC.execom.co.yu>
TODOs for Petar

Signed-off-by: Nikola Olah <nolah@WS-NOLAH-PC.execom.co.yu>
Signed-off-by: Petar Petković <cartmans.park@gmail.com>
Merge branch 'listPropertiesinAssertObject' of https://github.com/vesin/testutil.git into propertyRefactoring

Conflicts:
	src/main/java/eu/execom/testutil/AbstractExecomAssert.java
	src/main/java/eu/execom/testutil/EntityAssert.java
	src/main/java/eu/execom/testutil/property/ISingleProperty.java
	src/main/java/eu/execom/testutil/property/MultiProperty.java
	src/main/java/eu/execom/testutil/property/Property.java
	src/test/java/eu/execom/testutil/ExecomEntityAssertTest.java
	src/test/java/eu/execom/testutil/util/ConversionUtilTest.java
Fix for issue #21.
Fix for issue #13.
Implementation for issue #17.
Some minor changes.
Part of intern's code review.

Signed-off-by: Nikola Olah <nolah@WS-NOLAH-PC.execom.co.yu>
Signed-off-by: Nikola Olah <nolah@WS-NOLAH-PC.execom.co.yu>
Signed-off-by: Nikola Olah <nolah@WS-NOLAH-PC.execom.co.yu>
Merge branch 'internship'

Conflicts:
	src/main/java/eu/execom/testutil/property/Property.java
Merge branch 'master' of https://github.com/vesin/testutil.git

Conflicts:
	src/main/java/eu/execom/testutil/AbstractExecomAssert.java
	src/main/java/eu/execom/testutil/AbstractExecomRepositoryAssert.java
	src/main/java/eu/execom/testutil/property/IgnoreProperty.java
	src/main/java/eu/execom/testutil/property/NotNullProperty.java
	src/main/java/eu/execom/testutil/property/NullProperty.java