Merge branch '4.11' of https://github.com/Ultimaker/Cura into 4.11

resources/texts/whats_new/0.html

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 <h4>Complete UI refresh</h4>
 <p>Look around and you will notice that we have refreshed over 100 icons throughout Ultimaker Cura. The new icons are designed for clarity – resulting in a simpler and more informative slicing experience. Also, when scaling the Ultimaker Cura window, the UI will adapt, resulting in less visual clutter.</br> 
-<a href="">Learn more</a></p>
+<a href="https://ultimaker.com/learn/clear-skies-with-ultimaker-cura-4-11-beta?utm_source=cura&utm_medium=software&utm_campaign=whatsnew-4-11-releaseblog">Learn more</a></p>

resources/texts/whats_new/1.html

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 <h4>Improved digital library integration</h4>
-<p>Collaborative workflows using the Digital Library are now simpler. Every user with a cloud-connected Ultimaker 3D printer can access stored projects. And we have added a “Search” function to make finding files easier. <a href="">Learn more</a></br>
-Ready to get more out of your Ultimaker 3D Printer? <a href="">Upgrade to Ultimaker Essentials</a></p>
+<p>Collaborative workflows using the Digital Library are now simpler. Every user with a cloud-connected Ultimaker 3D printer can access stored projects. And we have added a “Search” function to make finding files easier. <a href="https://support.ultimaker.com/hc/en-us/articles/360020968960-Enhance-your-3D-printing-workflow-in-Ultimaker-Cura#h_01F32KXEXZ0940RCVFQZCWSG7B?utm_source=cura&utm_medium=software&utm_campaign=whatsnew-4-11-supportblog">Learn more</a></br>
+Ready to get more out of your Ultimaker 3D Printer? <a href="https://ultimaker.com/software/ultimaker-essentials?utm_source=cura&utm_medium=software&utm_campaign=whatsnew-4-11-essentialspage">Upgrade to Ultimaker Essentials</a></p>

resources/texts/whats_new/3.html

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 <h4>Learn about the past and future of Ultimaker Cura</h4>
-<p>How did Ultimaker Cura start? What does its future hold? Hear the origin stories and discover what's next, by listening to the core developers and community featured in <a href="">episode 29</a> and <a href="">episode 30</a> of the Talking Additive podcast.</p>
+<p>How did Ultimaker Cura start? What does its future hold? Hear the origin stories and discover what's next, by listening to the core developers and community featured in <a href="https://www.talkingadditive.com/episodes/episode-29-the-story-of-ultimaker-cura?utm_source=cura&utm_medium=software&utm_campaign=whatsnew-4-11-ta-ep29">episode 29</a> and <a href="https://www.talkingadditive.com/episodes/episode-30-the-future-of-ultimaker-cura-and-beyond?utm_source=cura&utm_medium=software&utm_campaign=whatsnew-4-11-ta-ep30">episode 30</a> of the Talking Additive podcast.</p>

resources/texts/whats_new/4.html

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 <h4>Get more information</h4>
-<p>Want more information on new features, bug fixes, and more for Ultimaker Cura 4.11 beta? Read the full<a href="">blog post</a> and don't forget to give us your feedback on<a href="https://github.com/Ultimaker/Cura/issues/new/choose">Github</a>!</p>
+<p>Want more information on new features, bug fixes, and more for Ultimaker Cura 4.11 beta? Read the full<a href="https://ultimaker.com/learn/clear-skies-with-ultimaker-cura-4-11-beta?utm_source=cura&utm_medium=software&utm_campaign=whatsnew-4-11-releaseblog">blog post</a> and don't forget to give us your feedback on<a href="https://github.com/Ultimaker/Cura/issues/new/choose">Github</a>!</p>