CogStack/MedCATtrainer: Metrics fixes and front end build upgrade

What's Changed <ul> <li>Example project loading fixes by @tomolopolis in <a href="https://github.com/CogStack/MedCATtrainer/pull/131">https://github.com/CogStack/MedCATtrainer/pull/131</a></li> <li>CU-862jzmnm1: fix dockerfile install flag by @tomolopolis in <a href="https://github.com/CogStack/MedCATtrainer/pull/132">https://github.com/CogStack/MedCATtrainer/pull/132</a></li> <li>Update node / NPM and frontend build packages by @tomolopolis in <a href="https://github.com/CogStack/MedCATtrainer/pull/133">https://github.com/CogStack/MedCATtrainer/pull/133</a></li> <li>CU-862k0b38r: concept summary UI fixes by @tomolopolis in <a href="https://github.com/CogStack/MedCATtrainer/pull/134">https://github.com/CogStack/MedCATtrainer/pull/134</a></li> <li>CU-862k0b38r: reduce add annotation padding by @tomolopolis in <a href="https://github.com/CogStack/MedCATtrainer/pull/135">https://github.com/CogStack/MedCATtrainer/pull/135</a></li> <li>CU-2yfm6ve: Fix backend and frontend styling with b-tabs by @tomolopolis in <a href="https://github.com/CogStack/MedCATtrainer/pull/136">https://github.com/CogStack/MedCATtrainer/pull/136</a></li> </ul> <p><strong>Full Changelog</strong>: <a href="https://github.com/CogStack/MedCATtrainer/compare/v2.7.0...v2.8.0">https://github.com/CogStack/MedCATtrainer/compare/v2.7.0...v2.8.0</a></p&gt