Piwik URL tracking bugs

[lukebarnard1]

In the process of making our analytics indicate the true window.origin and redacted window.hash, I discovered some bugs with tracking for certain pages.

These bugs could have always existed, but potentially these are regressions. We don't know because there are no automated tests done on the analytics.

Bugs:

• When clicking "settings" (from /groups or /room/!...), we track the URL that we were at previously. When closing settings we track the thing we view next - which is apparently always the previous room we were looking at.
• When clicking "groups", we track the URL we were at previously.
• When clicking "directory", we track the URL we were at previously.
• When clicking "home", we track the URL we were at previously.

N.B. despite not tracking the above correctly, they may still appear in the stats because they might be "the URL we were at previously".