Keep filtering results on back/home button

Currently, in master:

- do filtering, click on something, go back - search disappears

This is unwanted from what I understand.

Unfortunately changing this requires changes to search, and there are already some search changes waiting for 1.5 in two PRs (integration-with-master and searching in text file) so if I did any changes now, we'd have a *REALLY* hard time merging the three (it's already gonna be hard with 2).

So what I propose is that we postpone this bugfix for 1.5.0 where I can then properly do it after all currently pending PRs are done. If you disagree let me know and I'll try to squeeze this into 1.4.2

CCing @tobiasKaminsky @AndyScherzinger and @jancborchardt for input and decision.