Refine log console message UX

[jasongrout]

References

Fixes #7444 and appears to also fix #7443

Code changes

• Introduces a protected output function to determine when messages should be collapsed, and uses it to collapse messages less aggressively. In particular, we only collapse messages that are in the same timestamp second (so that the timestamp at second resolution is accurate).
• Change the title of the log console prompt nodes to include the full date.
• Change the status bar indicator to indicate number of incoming messages that have not been displayed, rather than total number of (possibly collapsed) log entries. This gives the user more relevant information ("How much new stuff is there" instead of "how much stuff is there total")

User-facing changes

Backwards-incompatible changes

I don't think there are any backwards incompatible changes. The one function signature that changes is a private function to the module.

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[jasongrout]

@ivanov - does this address most of your concerns?

@mbektasbbg - does this also address some of the thoughts you had regarding how log messages are treated and displayed?

[mbektas]

thanks @jasongrout this looks great to me. I can still reproduce #7443 with these changes though.

[mbektas]

@jasongrout I tested again and I am no longer able to reproduce #7443 . Looks good to me.

[jasongrout]

Thanks!

[jasongrout]

@meeseeksdev backport to 1.x