be: read csob's moje info notice from public samples, beside its ceb one - #45

ČSOB's own internet banking sends "Moje info - Avízo", a template of its own beside CEB's. Read from radekhulan/myinvoice's samples (MIT), samples only like the rest of ČSOB; the signed subject picks it.

• One transaction, labels on lines of their own, each value under its label.
• The direction is stated twice, Příchozí / Odchozí in the kind and the amount's sign, and has to agree.
• Zero padding: the sample's variable symbol is 0009002567593, 13 digits for a field of 10. Only zeros beyond ten are cut (0000002567593 stays 0002567593); myinvoice cuts every leading zero, which would drop zeros that belong to the symbol. Anything else longer than ten is refused.
• The name's line is pinned: two lines under Název protistrany must come Datum účtování, through a new NotificationLines.requireAt (requireNext is now requireAt(…, 1, …)), tested on its own.

Four breaks each fail a test: the name line not pinned, kind and sign not compared, any excess cut rather than zeros only, the template not chosen by subject. make build: green.