WebUI Mobile Wallet Connect

[rootzoll]

• [ ] add a "Connect" section in the WebUI to connect mobile App (Zeus, Zap, Bitbanana, ...) & other Desktop Apps
• [ ] remove UI overhead from connect section in SSH (LCD images, storelinks, etc)

[cstenglein]

Related to https://github.com/cstenglein/raspiblitz-web/issues/522