RepositoryRegistry is used for indexing context now. There is still more work to do
to move the maven dependent parts into its own projects and update the dependencies.

Combining the indexer api and repository api into archiva-repository-api
They have bidirectional dependencies so they are put together in one module.

Adding new classes for a generalized indexer api that will be used for interfaces
and implementation independent tasks.

Adding content provider service that creates repository content instances
remove direct access to the repository content instances.

Adding unit tests for the registry.
Fixing some uri issues.
Removing dependency to consumer to break circular dependency

Considered it too complex to convert the cron expressions into java interface
that takes all features into account that are possible by quartz cron strings.

Adding interfaces for managed and remote repositories. Features
that may not be common for repository implementations use the
RepositoryFeature interface.

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1583508 13f79535-47bb-0310-9956-ffa450edef68

(fix html content + replace @todo with TODO  )

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remove a space in transactions name pom.

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