Should check all files with versions - at least all the important ones

[sbulen]

Description

In SubsAdmin.php, in getFileVersions(), specific files are checked for versions. This is accessible under Admin | Maintenance | Forum Maintenance | Routine and also under Admin | Administration Center | Support Information.

The problem is that not all files are checked, and in fact it's missing some important ones, including the main index.php, proxy.php, cron.php and all of the .js files.

I think we should check everything with a version.

*** These checks must be kept in sync with detailed-version.js that is retrieved dynamically from SimpleMachines.org and maintained there. ***

So, half of the fix for this is in SubsAdmin.php and half of the fix is on detailed-version.js, which is dynamically retrieved from SimpleMachines.org.

[sbulen]

I added this to 2.1.4 as we should be checking all the important files (index.php, cron.php, proxy.php & some of the .js files) at the very least...

[jdarwood007]

Adding note, we have improved the checking of "root" files. The only thing missing here is JavaScript file checks. Which should be added as we improve overall JS and add versioning data to the js headers. We should also include CSS.