More intuitive keymapping recommendations

[quotuva]

(Before the current ones become entrenched 😊)

python-view-data-goto-previous-page: C-x [
python-view-data-goto-next-page: C-x ]

as in text, dired, calendar, doc-view & hexl modes; see (info "(emacs) Pages").

python-view-data-goto-first-page: M-g M-<
python-view-data-goto-last-page: M-g M->

as in isearch (with its M-s prefix).

python-view-data-do-commit: C-c C-c

as is standard.