iot-application

As our focus is now on the Hub the readme should talk about it.

Also we moved our snap of the smart device to the snap of the hub because it used the needed name.
So the snap link in the readme is under the incorrect category and should move to the CyBear Jinni Hub instead.

For normal builds, it is helpful to have more specific versions than simply the upcoming version snapshot. 2019.2.MMDD.HHmmSS.0 seems like a reasonable format. It combines the year major and minor open source versions with a timestamp and ending in .0 which follows an internal convention where these are treated specially as development builds.

On the settings page, there should be an option for deleting all value logs that have been recorded so far of all components.