#488 Adding offset option to search and query similarity funcitonalities
#488 some more small fixes
#488 Adding analysis handler in SoundSerializer (for instances, not lisst)
#488 Adding analysis data to all views returning sound lists
#488 Fixing missing import in apiv2 views
#488 Bugfix in constructing search pagination links
#488 fixed some bugs when grouping by pack and moved construction of pagination links to search_form
#488 moved import placed in wrong place
#488 created advanced search form and fixed some small bugs
#488 testing with combining solr results and gaia results in apiv2
#488 Basic combined text and content search
Merged with apiv2