ls: Keep the extension optimization. Keep globbing if needed.

* src/dctc/java/com/dataiku/dctc/command/Ls.java: Fix a bug.
Correct s3 recursive list.

* src/dctc/java/com/dataiku/dctc/file/S3File.java: Add correctly the
  hierarchy.
style: Sort class

* src/dctc/java/com/dataiku/dctc/file/ProtocolFileBuilder.java: Here.
Error in configuration are not fatal.

Display a warning on the error output but don't fail if the account is
not needed.

* src/dctc/java/com/dataiku/dctc/Main.java,
  src/dctc/java/com/dataiku/dctc/file/FTPFileBuilder.java,
  src/dctc/java/com/dataiku/dctc/file/FileBuilder.java,
  src/dctc/java/com/dataiku/dctc/file/GSFileBuilder.java,
  src/dctc/java/com/dataiku/dctc/file/HdfsFileBuilder.java,
  src/dctc/java/com/dataiku/dctc/file/HttpFileBuilder.java,
  src/dctc/java/com/dataiku/dctc/file/LocalFileBuilder.java,
  src/dctc/java/com/dataiku/dctc/file/ProtocolFileBuilder.java,
  src/dctc/java/com/dataiku/dctc/file/S3FileBuilder.java,
  src/dctc/java/com/dataiku/dctc/file/SshFileBuilder.java: Here.
Method to help if we could display in colors.

* src/dctc/java/com/dataiku/dctc/configuration/GlobalConf.java
  (displayWithColor): Here.
style: Less space.

* src/dctc/java/com/dataiku/dctc/file/S3FileBuilder.java: Here.
Move printing helper.

* src/dctc/java/com/dataiku/dctc/configuration/GlobalConf.java: From here...
* src/core/java/com/dataiku/dip/utils/PrettyString.java: ...to here.

* src/dctc/java/com/dataiku/dctc/command/AddAccount.java,
  src/dctc/java/com/dataiku/dctc/command/Ls.java,
  src/dctc/java/com/dataiku/dctc/configuration/SshUserInfo.java,
  src/dctc/java/com/dataiku/dctc/display/DisplayFactory.java: Adjust.
style: Clear the string printing.

* src/dctc/java/com/dataiku/dctc/file/ProtocolFileBuilder.java: Here.