Prefer a warning in the logger to print stack trace.

* src/dctc/java/com/dataiku/dctc/configuration/GlobalConf.java: Here.
display a warning when the terminal width cannot be compute.

* src/dctc/java/com/dataiku/dctc/configuration/GlobalConf.java: Here.
Display an error message when we rethrow the exception.

* src/dctc/java/com/dataiku/dctc/file/SshFile.java: Here.
ssh: Correct getAbsolutePath.

* src/dctc/java/com/dataiku/dctc/file/SshFile.java: Don't return the
  host name in the path.
ssh: Delete command for sticky directory.

* src/dctc/java/com/dataiku/dctc/file/SshFile.java: Here.
ls: Correct color.

* src/dctc/java/com/dataiku/dctc/command/Ls.java: Do not make a
  substring deleting the wild cards.
ssh: Use only on tr when needed.

* src/dctc/java/com/dataiku/dctc/file/SshFile.java: Same effect, less
  characters.