Default to non-empty tab on developer's profile

[viktorix]

Profiles will default to Plugins tab, which is not an issue for plugin developers but it is an issue for theme developers. Here's an example:
https://staging-directory.classicpress.net/developers/benlumia007/

We should consider defaulting to a non-empty tab if plugin tab is empty. We could use the new tab counts to add a conditional check.

A nice user-centric way to solve this would be to add an option for developer to select default tab for their profile. Although defaulting to a non-empty tab will suffice.

[viktorix]

@xxsimoxx hey, the code has been updated and there seems to be a minor issue. when the default tab is theme/snippet, it doesn't load the content of the tab. Example: https://staging-directory.classicpress.net/developers/benlumia007/