Create or run companies transactions bulk recategorize

#3046: why the category was changed. One line of plain text (trimmed; no control, line-separator or text-direction characters, no HTML markup, and not the text '| Recategorization reason:'). Stored as the reasoning of each recategorized row's decision on the transaction timeline and appended to the replacement journal entry's description as ' | Recategorization reason: <reason>'. Absent leaves the decision as before and removes a reason left on the description by an earlier recategorize; a description that never carried one is unchanged. The reason is not sent to QuickBooks.

#3041: true also writes or repoints the merchant rule for the selected transactions' merchants. Absent or false applies the category to the selected transactions only and the rule is left alone. Stripe revenue transactions (a Stripe charge, invoice or subscription payment, or a Stripe counterparty-history suggestion) are outside this choice: a category change on one always writes its exact company rule, because that rule is what lets the revenue entry post. The bookkeeping engine's feedback run is queued whatever the value; its output is a proposal for review.