Front end index.html caching needs to be adjusted

[theorm]

It seems that the university firewall caches things for longer than it should. We can see in the logs that some browsers use outdated JS chunks in the app. For example, the following service no longer exist in the newer version of the app and the IML:

[impresso.middle-layer] [Front End Error] (FeathersError:NotFound) at "search-facets.get": Service 'search-facets' not found - qs:{"filters":[{"type":"daterange","q":["1940-01-01T00:00:00Z TO 2018-12-31T23:59:59Z"],"op":"OR"},{"type":"string","op":"OR","q":["www"],"precision":"exact"},{"type":"hasTextContents"},{"type":"hasTextContents"}],"group_by":"articles"}