ES mappings (types and fields) renamed.
Variables are indexed (in the same ES index, but in distinct mappings).
OPAL-1706 Variables and values are indexed in different ES indices and with different schedule strategies
OPAL-1706 Value sequence indexing fixed. Category indexing added.
Renamed type mapping name for dictionary index.
Merge commit '439f4841d509cf8961d785bff29197674845f283'
Merge commit '46a6bec963aa6eb5cbeb05426435bb66395c372d'
var-index-feature merges
Merge commit 'f9e8d785c7d8abbd1769403d7576ca87673c0a2c'
Merge commit '3464e3dbbecaab31aaafb328b33cc97dfd71fc3e'