History "summary" and unconfirmed/local txns

[SomberNight]

electrum/gui/qt/history_list.py

Lines 160 to 165 in f1b7578

	h = self.summary
	start_date = h.get('start_date')
	end_date = h.get('end_date')
	if start_date is None or end_date is None:
	self.parent.show_message(_("Nothing to summarize."))
	return

If there are unconfirmed or local txns in the wallet history, we will not display a summary.

Should we perhaps exclude these transactions from the summary?
What about unverified txns?

Filtering could be done around line 1042:

electrum/lib/wallet.py

Lines 1040 to 1044 in f1b7578

	# add summary
	if out:
	b, v = out[0]['balance'].value, out[0]['value'].value
	start_balance = None if b is None or v is None else b - v
	end_balance = out[-1]['balance'].value

but then what about "unrealized gains"?

electrum/lib/wallet.py

Line 1059 in f1b7578

unrealized = self.unrealized_gains(domain, fx.timestamp_rate, fx.ccy)

[ecdsa]

that's a bug, we should display a summary even with unconfirmed tx.
I am still working on that

[ecdsa]

I changed the semantics slightly: start_date and end_date are the dates of the filtered period, and no longer the dates of the first and last transaction