Rename CM_SearchQuery_Abstract to CM_Elasticsearch_Query
Rename CM_Elastica_Type_Abstract to CM_Elasticsearch_Type_Abstract
Rename CM_PagingSource_Search to CM_PagingSource_Elasticsearch
Rename CM_Search_Index_Cli to CM_Elasticsearch_Index_Cli
Rename CM_Search to CM_Elasticsearch_Client
Merge branch 'master' of github.com:denkmal/denkmal.org into issue-241
Upgrade to CM 1.15.0
Merge pull request #241 from njam/issue-241

Move search stuff to Elasticsearch/