Allow more characters and remove the need for hard-coded line breaks in labels

[VFUC]

I localised some strings to German in another PR (#162) and got the (valid) response that the increasing character count would not lay out well.
Considering the possibility of other languages having a similar affection for long words, I think it's not a bad idea to make the labels more flexible.
I put the proposed minimumScaleFactor to 0.75, which in my opinion still qualifies as legible. In the example of the "bodyLabel" it allows for ~100 additional characters.
This also removes the need to add line breaks into the middle of the strings.

[nickoneill]

Thanks @VFUC! I'll check this out.

[bre7]

Note: Don't forget to update Keys (string files)