Update requirement files with new feature templates and fix backend API error message, along with mobile project config updates and documentation improvements

03_source/mobile.trunk.1/public/assets/img/appicon.svg

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+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path fill="#3880FF" d="M256 139.3c-64.3 0-116.7 52.3-116.7 116.7 0 64.3 52.3 116.7 116.7 116.7S372.7 320.3 372.7 256 320.3 139.3 256 139.3z"/><circle fill="#3880FF" cx="423.5" cy="96.5" r="53.2"/><path fill="#3880FF" d="M489 149.9l-2.2-4.9-3.6 4c-8.7 9.9-19.8 17.5-32.1 22.1l-3.4 1.3 1.4 3.3c10.6 25.5 16 52.5 16 80.2 0 115.3-93.8 209.2-209.2 209.2S46.8 371.3 46.8 256 140.7 46.8 256 46.8c31.3 0 61.5 6.8 89.6 20.2l3.3 1.6 1.4-3.3c5.1-12 13.3-22.7 23.6-31l4.2-3.4-4.8-2.5C336.8 9.6 297.3 0 256 0 114.8 0 0 114.8 0 256s114.8 256 256 256 256-114.8 256-256c0-36.9-7.7-72.6-23-106.1z"/></svg>
+

03_source/mobile.trunk.1/public/assets/img/ionic-logo-white.svg

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+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path fill="#FFF" d="M256 139.3c-64.3 0-116.7 52.3-116.7 116.7 0 64.3 52.3 116.7 116.7 116.7S372.7 320.3 372.7 256 320.3 139.3 256 139.3z"/><circle fill="#FFF" cx="423.5" cy="96.5" r="53.2"/><path fill="#FFF" d="M489 149.9l-2.2-4.9-3.6 4c-8.7 9.9-19.8 17.5-32.1 22.1l-3.4 1.3 1.4 3.3c10.6 25.5 16 52.5 16 80.2 0 115.3-93.8 209.2-209.2 209.2S46.8 371.3 46.8 256 140.7 46.8 256 46.8c31.3 0 61.5 6.8 89.6 20.2l3.3 1.6 1.4-3.3c5.1-12 13.3-22.7 23.6-31l4.2-3.4-4.8-2.5C336.8 9.6 297.3 0 256 0 114.8 0 0 114.8 0 256s114.8 256 256 256 256-114.8 256-256c0-36.9-7.7-72.6-23-106.1z"/></svg>