Merge branch 'master' into dev-search-article-type-fix
Variable name change
Updates to fix bugs with the article type filter and facet
Merge branch 'master' into dev-AMEC-1846

Resolved conflicts in:
	base/src/test/java/org/ambraproject/service/search/SearchParametersTest.java
AMEC-2129
updated commons-validator artifact
removed commons-validator from ambra base because it was not being used
added url validation to the media coverage form
AMEC-2129 added unit test
AMEC-2148 fixed unknown
Merge remote-tracking branch 'origin/master' into dev-AMEC-2129
Merge remote-tracking branch 'origin/master' into dev-AMEC-2148
Merge remote-tracking branch 'origin/dev-AMEC-2148' into release/2.9.2rc
Merge remote-tracking branch 'origin/dev-AMEC-1846' into release/2.9.2rc
set 2.9.2 in pom files
AMEC-2129 added url validation
Merge remote-tracking branch 'origin/dev-AMEC-2129' into release/2.9.2rc
added release notes
AMEC-2129 unit tests
Merge remote-tracking branch 'origin/dev-AMEC-2129' into release/2.9.2rc
AMEC-1944 added a method to retrieve an article's amendments of type eoc or retraction
AMEC-1944 added new properties for the search result's amendments (type and doi), modified the Builder class accordingly
AMEC-1944 added a new method to determine if each search result has an amendment of type eoc or retraction using an instance of the ArticleService. Updated the applicationContext files for the new dependency