Merge branch 'unittest' into aggregate
Merged unit tests
Fixed MW response handling in static functions
Updated aggregate table format (type = tinyint(1)) and code accordingly
Merge branch 'unittest' into aggregate
Merge branch 'aggregate' into travis

Conflicts:
	lib/Volkszaehler/Interpreter/Interpreter.php
	misc/tools/aggregate.php
	test/tests/AggregationTest.php
	test/tests/Middleware.php
Merged aggregation test