It's just UTF-8, Maven. No need to throw warnings all over the place...
This commit fixes some of the source encoding warnings Maven would print during compilation.
Metrics will greatly help the development process in terms of finding out which server versions people are running, as well as which features they are using. For now, we check to see how widespread Vault is, and how many arenas and classes people have.
Advanced bar charts are, at the time of this commit, not supported in the bStats dashboard. When they are supported again, we can look into usage statistics for specific settings and features.
This also swaps out the dependency on mockito-all with mockito-core, which is actually maintained. The purpose of updating is to allow for new Mockito features, such as mocking final methods, which happens due to the test resource org.mockito.plugins.MockMaker.
