Original idea inspired from discussion with tb, tobhe, and stsp at g2k22: display view-specific help, with option to toggle display of full key map reference when {H,F1} is pressed again inside the help view. Includes improvements suggested by stsp. ok stsp@

ok op@

Use the & key map to enter a pattern with which to limit the displayed commits to those matching the provided pattern; similar to less(1) and mutt's limit feature. Includes various tweaks from op. ok plus fixes from op@

and adjust the callers. discussed with and ok stsp@

In splitscreen mode, make the active view headline highlight extend the full width of view->ncols. While here, format the tree view header like the blame view by moving the index to the path line. suggested by and ok stsp@

ok stsp@

got_get_repo_commits iterates over the commits and build a queue for later display. My previous memleak fix moved the TAILQ_INSERT_TAIL *before* the logic to exit the loop and so it broke the pagination. This fixes it by delaying the insertion into the queue, but also by moving the check for the "previous" button after we've opened the commit. ok tracey

This adds a new helper function `gotweb_link' that outputs an HTML link with the parameter correctly escaped. ok stsp@