Starting to put search in its own module
Separate configuration file for the search module
Fixing bug introduced in SchemaRepository upgrade
Refactoring SOLR SearchService

- avoiding instance creation at each API request
- extracting commons interfaces
- service definition
Search service lookup, replacing CommonSearch object
Refactoring Indexing into a Service

- IndexingService with main methods
- SOLR-independent IndexDocument based on MultiMap
Moving classes to search module, adjusting SBT dependencies
Merge pull request #847 from delving/13.03-search-modularization

13.03 Search modularization