Install: Use PHP_EOL instead of '\n'
Install: escape strings in generated config_inc.php

Fixes #17012
Install: remove redundant db version info line
Install: fix HTML and layout

- added missing tr and td tags
- moved incorrectly placed closing form tag
- move config_inc.php table within cell of parent
- make final status and link a table instead of paragraph
CSS: fix padding for main menu items

Old CSS caused the menu item's link to extend from the right of the text
until the vertical bar, while the padding to the left was not
hyperlinked.

The item's text is now centered within the CSS box instead of
left-justified, fixing that behavior.
Increase size of bug jump form text field

Size of 4 was too small to fit the default 7-char bug id