classic relevance:
* query_builder.py: enable hl.q, wrap search with relevance wrapper if defined
* config.py: added relevance, highlighter wrappers, modified defaults
* query_builder.py: reworked code that detects sort option and enables relevance ranking
* config.py: use more flexible SOLR_RELEVANCE_FUNCTION rather than *_WRAPPER
search AST+PHY by default
* forms.py: database selection is now set in a hidden variable
* search_macros.html: database selection now hidden from optional search menu
* results.html: fix bug with extra semicolons at end of author list
* views.py: enable more flexible formatting of input in bigquery for ADS classic compatibility
removing SQLAlchemy
Merge pull request #74 from lbjay/aa_aas_deploy

Aa aas deploy
Dialog box for citation helper/metrics to select record number
Slider now starts on 'default' value
Exports (Classic/Formats) work now too
Visualization done too
Cleanup: better nameing dialog box
Moved dialog 'div' to 'search_results'
Dialog box when no records are selected
Positioning of selection box fixed
The 'mouse' and 'position' jQuery UI libraries create conflicts
Record selector now implemented for everything
Apparently jQuery UI dialog doesn't like compression
Box draggable / result num instead of max if appropriate
number of records < max number: slider at numrecs
Update of export max/default values