This commit updates URLs to prefer the https protocol. Redirects are not followed to avoid accidentally expanding intentionally shortened URLs (i.e. if using a URL shortener).
# Fixed URLs
## Fixed Success
These URLs were switched to an https URL with a 2xx status. While the status was successful, your review is still recommended.
* [ ] http://www.apache.org/licenses/LICENSE-2.0 with 292 occurrences migrated to:
https://www.apache.org/licenses/LICENSE-2.0 ([https](https://www.apache.org/licenses/LICENSE-2.0) result 200).
When just importing the ftp example as a maven project, I ran into the issue of a slf4j version discrepancy described here:
http://www.slf4j.org/faq.html#IllegalAccessError
This is solved by adding the specific version dependency of `slf4j-api`.
* Add the specific `slf4j-api` dependency to the Gradle script
* Change the dependency scope for `slf4j-` impl to the `runtime`.
* Regenerate POMs
