Describe your issue or idea

The project name checking for manual installation should be case insensitive

Steps to reproduce (if reporting a bug)

  • Enter "Webform" (with a capital W) into the manual installation box.

Actual behavior (if reporting a bug)

  • Error thrown states Webform is not a valid module :(

Expected behavior (if reporting a bug)

  • Webform should install
GitHub Link: 
https://github.com/backdrop/backdrop-issues/issues/2885
GitHub Issue #: 
2885