Style properties for read-only text components
Fix mixed CR/CRLF line endings in source code.

All line endings should now (dependening in your Git settings) be
platform neutral (meaning LF-only within Git and CRLF for Windows
if configured accordingly).
Merge branch 'hotfix/crlf-linendings' into stable-3.0.x
Merge remote-tracking branch 'ddiepold/feature/read-only-text-fields-styling' into stable-3.0.x