Improved layout of performance monitoring by padding the output with the max length of used test names.
Merge pull request #430 from Donnerbart/fixIssue427

Fix issue #427
Made padRight() and padLeft() more safe for invalid arguments.
Merge pull request #431 from Donnerbart/fixBrokenIssue427

Made padRight() and padLeft() more safe for invalid arguments.
A test can return -1 if it doesn't have any performance numbers; this was interpreted not correctly in the monitor
Merge pull request #432 from hazelcast/performance-monitor-displays-negative-performance-numbers

A test can return -1 if it doesn't have any performance numbers; this wa...