DATAES-285 - Support for Elasticsearch 5.0

[withccm]

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Hello.
I worked to support the latest version. https://jira.spring.io/browse/DATAES-285
I'm afraid, I did not formatting. If you need formatting, I'll try again.

I met a few issues.

• No suggest support.

• No suggest facet.
  Facets have been replaced by aggregations in Elasticsearch 1.0, which
  are a superset of facets.

• SoredFields is not working in Elasticsearch 5.x,
  I guess it's an Elasticsearch bug.

• The string field type will continue to work during the 5.x series.

• Filed.String -> Filed.Text

• Painless, Groovy Plugins not added.

I hope that I will be a little help.

[otrosien]

Two things: First, it would be really nice if the reformatting would be kept out of this PR. It is a lot of noise and makes it a lot harder to rebase and merge into the code base. Second, we would be willing to experiment and contribute to this feature, if there was a snapshot build off the feature branch in the spring snapshots-repository. Is that possible?

[withccm]

Of course. I will try as soon as possible.

[withccm]

Sorry. Formatting is not working well by Eclipse, I closed this PR.
I open a new PR.