Starting new test and generating the reports is taking too long

[itaiag]

When starting test, updating test or getting the list of all execution, the response time is taking too long. On my environment it takes about ~40ms for every 1000 executions that are stored in the server.
Investigation shows that the bottle neck is in the sorting mechanism in the AbstactMetadataPersistency component.

	@Override
	public synchronized List<ExecutionMetadata> getAll() {
		readFromPersistency();
		final List<ExecutionMetadata> result = new ArrayList<ExecutionMetadata>();
		result.addAll(executionsCache.values());
		synchronized (this) {
			Collections.sort(result);
		}
		return result;
	}

We need to move the sorting to the client side.