- Merged styppo's commit 014df1e
  limited to only changes related to the support for start and end
  dates

- Support any bank's custom order types via new options --download
  <arg> and --upload <arg>

- Add logging of the order type

- Use executable-packer-maven-plugin to package the project in a
  single jar. This plugin uses a Jar-in-Jar approach which does not
  break digital signature of the Bouncy Castle JCE provider jar. Run
  "mvn package" to package and run "java -jar ebics*.jar" to execute
  EbicsClient main class.

- When requesting order types that download data, NoDataException is a
  common occurrence. In this case, the client writes a warning to the
  log and exits with error code 2 (to distinguish the condition from
  other errors which return error code 1).

- When a file download succeeds, the client logs the success.

- Introduce new method EbicsClient.fetchFileIfAvailable which wraps
  fetchFile with warn and log.

- Add option --configuration-directory <arg> to override the default
  value of ${user.home}/ebics/client

- Add option --version to print version information

- In DefaultConfiguration.java, any configuration property that comes
  from a key in the configuration file can be overriden with a system
  property with the same key. For example, specify
  -Dlog.dir.name=/var/log to override the default ebics/client/log
  directory.

- In DefaultConfiguration.java, if a property is a compound of a
  directory name and a file name, specifying an absolute file name
  overrides the directory name. For example,
  -Dtraces.dir.name=/var/local/traces overrides the default value of
  traces under ebics/client/users/USERNAME.