Author name ASCII folding at index time (#250)

* Add period to list of removed punctuation

Adds periods to removed punctuation in "normalized_text_ascii" field type. This was to resolve a request to match abbreviated terms like "U.S." to their non-period-notation counterparts, e.g. "US".

* Add "pub_abbrev" field

* Add ASCII folding to index-time analysis chain for author field

Author: JCRPaquin

deploy/adsabs/server/solr/collection1/conf/schema.xml

@@ -59,9 +59,10 @@
 					pattern="[|]" />
 				<filter
 					class="solr.analysis.author.AuthorNormalizeFilterFactory" />
+				<filter class="solr.ASCIIFoldingFilterFactory" preserveOriginal="true" />
 				<filter class="solr.LowerCaseFilterFactory" />
 				<filter class="solr.TrimFilterFactory" />
-				
+
 			</analyzer>
 
 			<!-- If you update the normalization components (ie. add new steps; especially