CMS-16 in search-service master, remove all redundant 'public' modifiers from interface methods/fields

(taken manually from bugfix/CMS-10098 branch into feautir/CMS-10098)

CMS-9906 Adding JavaDoc capturing expected behavior when using returnParentNode in combination with sorting or property selection

CMS-9906 Adding unit test to capture intended behavior when using sorting in combination with returnParentNode

CMS-9905: Update and align project pom parent and other dependency version references across all product projects

CMS-9669: adding unit test to capture the expected behavior of org.onehippo.cms7.services.search.jcr.query.Filter#addContains to optimize an empty "contains" clause. See also ENT dash 868.

- adding unit test to document expected behavior when combining returnParentNode with selecting properties
- adding reload on startup
- updated getReturnParentNode to isReturnParentNode
= using static imports in JcrQueryNode