feat(ngx-layout): Fix issue with displayContent and add WCAG/aria compliancy#256

IbenTesara merged 1 commit intomasterstudiohyperdrive/hyperdrive-opensource:masterfrom

feat/ngx-layout/246-ngx-layout-displaycontent-does-not-render-on-initial-valuestudiohyperdrive/hyperdrive-opensource:feat/ngx-layout/246-ngx-layout-displaycontent-does-not-render-on-initial-valueCopy head branch name to clipboard