Dark mode material

[coriander31415]

• fix delete-item.component on favourites
• translate button save
• switch material components to dark mode
• change material colors to our global variables
• fix var rgba variables opacity
• fix phone select dark-mode
• fix eslint warning: @typescript-eslint/no-unsafe-member-access

    const dataMode = localStorage.getItem('rs_userMode');
    if (dataMode !== null) this.isDarkMode = JSON.parse(dataMode).name === "dark";