Regarding icomoon - this is from their license:
Prohibited UsesI will contact them and ask if we can use them.
Reselling or distributing any portion of Linearicons is prohibited, including any number of icons. You need to get permission for using Linearicons in open source projects (contact information at https://perxis.com). You may not give, rent, or lease the Product or parts of it to third parties. You may not use the icons as a part of any project where your customers are not a final customer. You may not use the icons as a part of any project where your customers or users can select icons to use in, modify or customize the final product.