Moved stemming support from static index config variable structure to column into idxINDEX table. Added corresponding web administration support for configuring it.
Moved stemming support from static index config variable structure to column
into idxINDEX table. Added corresponding web administration support for
configuring it.

tiborsimko/invenio-records,tiborsimko/invenio-records,inveniosoftware/invenio-search,inveniosoftware/invenio-records,tiborsimko/invenio-search,inveniosoftware/invenio-records,tiborsimko/invenio-search,inveniosoftware/invenio-search