Ensure that Form.fill doesn't attempt to validate

Fixes #1264
Don't send empty chunks

An empty chunk means the end of a chunked transfer encoding stream, so
the chunking enumeratee should filter them out and not send them.

Fixes #2175
Added working with git guidelines
Specs and doc for column qualified name and ambiguity
Specs for column flatten
Replace the usage of the deprecated Akka.future() way of invoking async code.

With reference to this discussion in the group: https://groups.google.com/d/msg/play-framework/uVHF-nRX93U/m4oZ8WNHcGIJ

Replaced the deprecated Akka.future() [1] method with the suggested Promise.promise() [2] method.

[1] https://github.com/playframework/playframework/blob/2.2.x/framework/src/play/src/main/java/play/libs/Akka.java#L41
[2] https://github.com/playframework/playframework/blob/master/framework/src/play/src/main/java/play/libs/F.java#L225
Merge pull request #1264 from jroper/1264-no-validate-on-fill

Form.fill still calls validation function
Merge pull request #2175 from jroper/2175-empty-chunks

Ok.chunked is  *not* ignoring empty blocks
Remove 1 error class
Update groupId and version to resolve Acolyte dependency from Central repo
Merge pull request #2181 from cchantep/anorm-acolyte-resolv

Update groupId and version to resolve Acolyte dependency
Merge pull request #2159 from cchantep/anorm-agnostic

Specs and doc for column ambiguity
Merge pull request #2169 from cchantep/anorm-flatten

Specs for column flatten
Merge pull request #2186 from donovanmuller/patch-1

Replace the usage of the deprecated Akka.future() way of invoking async ...
Support strings > 64kb in templates

Fixes #1755
Character column parser and parameter
Merge pull request #2189 from cchantep/anorm-char

Anorm char column/parameter
document how to prevent docs in dist

See https://groups.google.com/d/msg/play-framework/vXLwW2EvzmQ/X6gGm5oafrYJ
Making reverse ref generation optional
Refactor ToStatement trait and provided conversions, with specs and doc