Cosmetic improvements (various)

[Andrew49]

Lower-priority cosmetic improvements.....

• BME280 plugin: Value for Humidity is displaced to the left in the main Devices page
• BME280 plugin has units included in the display value on Devices page, whereas DS18B20 plugin does not; ideally have a common standard.
• uPyEasy web interface: tab shows "uPuEasy" not "uPyEasy"
• If I narrow the web browser window, the uPyEasy "tabs" displace onto a second line (which is expected) however the ones in the second row are half hidden by the main page area.

.... others can be added as found.

[Lisa999]

Fixed all, but the tab based one. Isn't this a more browser specific issue?

[Andrew49]

So far I've only tried this with Google Chrome (both Windows 10 and Linux Mint).
I'll try with other browser(s) and report back.
Andrew