Added Czech translation

Signed-off-by: PetrTodorov <info@petrtodorov.cz>

public/views/index/body.ejs

@@ -151,6 +151,7 @@
                         <option value="sr">Cрпски</option>
                         <option value="vi">Tiếng Việt</option>
                         <option value="ar">العربية</option>
+                        <option value="cs">Česky</option>
                     </select>
                     <p>
                         <%- __('Powered by %s', '<a href="https://codimd.org">CodiMD</a>') %> | <a href="<%- serverURL %>/s/release-notes" target="_blank" rel="noopener"><%= __('Releases') %></a> | <a href="<%- sourceURL %>" target="_blank" rel="noopener"><%= __('Source Code') %></a><% if(imprint) { %> | <a href="<%- serverURL %>/s/imprint" target="_blank" rel="noopener"><%= __('Imprint') %></a><% } %><% if(privacyStatement) { %> | <a href="<%- serverURL %>/s/privacy" target="_blank" rel="noopener"><%= __('Privacy') %></a><% } %><% if(termsOfUse) { %> | <a href="<%- serverURL %>/s/terms-of-use" target="_blank" rel="noopener"><%= __('Terms of Use') %></a><% } %>