Invalidate typeahead cache

[kardan]

Right now typeahead data (project title, org names...) are cached in the browsers local storage. Since some parts of our UI depends on the typeahead we need to make sure to invalidate the cache when new data exist. This to prevent things like not being able to connect to new organisation in my_rsr since the organisation is newer than the cached data.

[kardan]

Added a crude cache invalidation rule. If a new item have been added to the collection we ask for new data. Beside this rule there is also a ttl config that we can play with. The will eliminate the issue in My RSR where a user should add an orgs using the typeahead when having stale cache of organisation in local storage. It does however not make updates to things like project title or organisation names invalidate the cache.