Filters: Validate start date equal to end date

[danieldegroot2]

What feature would you like to see added?

When start date is equal to end date, trigger a validation warning / autofix to remove the end date (same/single day changesets). additionally, a suggestion could be provided to set the start date to the day prior (two days worth, this might be more useful for smaller area or early-day analysis)

Currently results in changeset list loading successfully with 0 changesets.

Also, it seems it is not possible to set the start/end time? this is okay, but could be added for deeper analysis.

Why would this be useful to you or other users?

Allows user to correctly filter to same/single day changesets (and two days if in smaller area or earlier in the day)

Currently user has to manually modify the query, or will assume there were no changes in the past 1/2 days.

(user should of course scroll down changeset list instead if they don't need further filters)

Related #69 (it is closed but see linked comments)