Merge pull request #5 from kyleneideck/develop

r9 to r10 SQL script was re-adding an existing column
add re enrich button on maintenance screen
who contributes to RDA on home page (without contributor page)
Vocab widget: updated demonstrator to include new advanced mode
Vocab widget: updated narrow, broad SISSVOC urls to get just children/parent, not descendants/ancestors
minor changes to the Vocab widget:
  - better 'mode' handling
  - removed defaults for mode, repository
  - renamed widget from ands_vocab_widget to vocab_widget
Vocab widget: updated demonstrator, documentation, css to reflect widget changes (advanced mode, events, configuration defaults, widget name, style names)
Vocab widget: updated (js) event namespace from the cryptic 'avw' to 'vocab.ands'
Vocab widget:
  - minor whitespace cleanup on demonstrator
  - added 'top' action, plus action sort callable for vocab sissvoc proxy
fix footer
social sharing with rss and twitter link. rss is not functional yet
Vocab widget (proxy): rejigged sorting callable
Vocab widget (proxy): added an item processor callable; after items
have been retrieved from SISSVOC, invoke the callable to process the
data before sending it on.

This is used to inject term counts from SOLR
rifcs vocabs in aro
rifcs vocabs in aro
Vocab widget: DRY advanced function handler __act() added; frontline
functions (search, narrow, top) are effectively facades for __act.
Vocab widget:
  - first pass at a tree mode; currently implemented using advanced mode in the
    demonstrator

(loading image is pants; needs replacing asap)
who contributes to RDA separate page
remove selected facet preliminary. add jquery1.9.1 to global lib
updated on removing selected facet and display of selected facet on no result