Merge pull request #4 from millerw8/master

DDF-36, DDF-38
DDF-38: Fixed help document typo.
DDF-38: Removed intro help section for clarity.
DDF-53: Fix license encoding

Change file encoding from Windows-1252 to UTF-8.
DDF-7 Updated root pom with security expansion api version
DDF-7 Initial implementation of the expansion code.
Included the expansion api, implementations, tests, commands, and features.
DDF-7 Incorporated the attribute expansion into the AbstractAuthorizingRealm to expand user attributes.
Refactored the code to move the AbstractAuthorizingRealm from the api to the impl bundles. Created the security-pep-userattr-map bundle to instantiate and expose an expansion service to be injected into the AbstractAuthorizingRealm. Updated pom files, blueprint, and metatypes to link everything together.
DDF-7 Refactored the security api/commons/impl packages since they were intricately linked. Added user attributes map/service.
Added the expansion feature to the ddf-framework.
Added the expansion feature to the security-core.
Adjusted the location of the SecurityLogger in each of the java files.
Updated expansion commands to check for empty maps and add the expansions command.
DDF-7 Updated the configuration process to use a configuration file, added javadocs and comments, minor bug fixes.
Changed the expansion service to an optional list of expansion services to resolve startup issues.
Fixed NPE in commands, reflected change to list of expansion services.
Added tests to test the configuration file processing.
Updated the blueprint and metatype files to reflect the list of services and default values.
DDF-7 Comment reformatted to match checkstyle requirements.
Merge pull request #5 from louiswins/fileencoding

DDF-53: Fix license encoding
DDF-51: Improved styling of metacard modal.

Added a modal header and footer to make the style more consistent.
Cleaned up CSS of metacard modal.
Added maven central as the first repository
Updated main DDF pom to remove fusesource repository.

This repo was having issues and we realized that there were no more dependencies dependent on it.
[maven-release-plugin] prepare release ddf-2.2.0.RC2
[maven-release-plugin] prepare for next development iteration
DDF-43: Added features for Cellar 2.2.6 along with updating version number
in pom
DDF-52 Fixed failure with isAvailable method when server object shut down

Added back integration test testExternalSolr (removed ignore).
Made a fix to catch exceptions when a solr ping fails. Failures will now
return false for if they are available.
DDF-54: FIFO strategy removed from blueprints

The FIFO federation strategy was removed from the blueprints since it is
incomplete.
DDF-22 Updated transformer to do resource retrieval against fed sources

Updated the transformer to not only do resource retrieval locally but to
provide the source name of the metacard so if it is a federated source,
the federated source can resolve the resource request.
Added unit tests for modifications.