Merge branch 'less4j' into 1.6.x
junit scope in wro4j-runner should be compile to avoid NoClassDefFoundError
add hamcrest-core dependency with compile scope to wro4j-runner. The hamcrest was removed from junit-4.11, resulting in NoClasDefFoundError in wro4j-1.6.3
remove unused file
remove duplicated hamcrest dependency declaration
fix merge conflicts