add: set field tyes related with TermVector to use morelikethisquery

Using morelikethisquery requires indexing with TermVector. Therefore,
I set some field types related with TermVector to use morelikethisquery.

Refer following url about FieldType.
http://lucene.apache.org/core/4_0_0/core/org/apache/lucene/document/FieldType.html
add: get similarity result among documents for description based on TermVector

Calculating scores among documents for description and making lists to show
the results of scores from each quries.

Reference:
a. brief presentation about Lucene scoring: http://goo.gl/4DK6Xz
b. Scoring - Introduction (lucene.apache.org): http://goo.gl/mrGWjr
c. Class MOreLikeThisQuery: http://goo.gl/5ihPpa

TODO: need to consider different Scoring methods if I can