Add some padding to the tag boxes

[cyclingcat]

Hi there,

first of all thank you for this app! A new member of my "OSM" folder on my Android device and very useful during my different OSM activities. :+1: (I recently discovered it on F-Droid.)

One observation: In the tag boxes the tag names always start on top of the field border, making the first letter sometimes hardly readable, in particular if the border colour is dark blue and the first letter is an "l". See the screenshot, the tag in the lower left corner reads "anduse", the black-on-dark blue "l" gets swallowed by the border:

So I'd suggest to add some padding on the left and right side of the boxes between the border and the text. Two pixels could be enough on each side.

(Version 1.1.0 from F-Droid, Android 9.0)

The cycling cat

[ubipo]

Added in fa0cfef.

Will be live in v1.1.2