move initialbbox parameter to config file
move autozoom parameter to config file
move enableDefaultDatelineZoom and defaultDatelineZoomBbox to config file
remove proxy and proxyPort config options
remove searchUsingBboxByDefault from config options
remove unused config options

 * westWidth
 * headerHeight
 * footerHeight
 * activeLayersHeight
move popupWidth and popupHeight to config file
remove unused config options
 * downloadCartFilename
 * downloadCartMaxNumFiles
 * downloadCartMaxFileSize
proper mocking of variables in js testing
move downloadCartDownloadableProtocols to config file
move metadataLayerProtocols to config file

remove unused metadataLinkProtocols
remove unused footerContentWidth config option
move footerContent to config file
move mapGetFeatureInfoBuffer to config file
factor long config path into variable
Merge pull request #1472 from aodn/db_to_config_file

db to config file
Improve exception handling for bulk downloads
No log output for user-cancelled requests