add an LRU cache to the REST store, cache the results of fetches
obey Cache-Control: no-cache and/or Pragma: no-cache response headers in remotebinaryfile.js
make REST data store obey no-cache headers
suppress uninitialized-value warnings for source-less features in flatfile-to-json.pl when filtering for a certain source
Merge branch 'maint/1.9.x'
fix small bug with placement of highlighting icon in commonIcons*.png