pfSense

Fix #6137:

- Uninstall all packages on current system before upgrade using
pre_upgrade_command script
- Create a file containing all packages previously installed and
reinstall them on first boot after upgrade

Test for internet connection 3 times trying to reinstall packages after upgrade or config restore. Fixes #6180

Fixed #6920 - Missing input element

Merge pull request #2920 from NOYB/System_/_Update_-_Textual_Alteration

Merge pull request #2919 from NOYB/System_/_Update_-_Punctuation

Merge pull request #2918 from phil-davis/patch-4

Fixed #6287

System / Update - Textual Alteration

System / Update - Punctuation

Clean up some punctuation.

Comment typos in pkg_mgr_install.php