KSqueezedTextLabel doesn't rich text. This causes the used <b> and </b> to sometimes become visible when the infopanel is reduced in size.
We split the text up into two parts: The left-most is a QLabel (because it has predictable horizontal size) with the title and the right-most is a KSqueezedTextLLabel with the value. The left-side one can then be set to bold font.
This changes some strings slightly (the %1 are removed from some strings) and it's meant for Applications/16.12 branch which is now in string freeze. Hence: Can someone from kde-i18n-doc please approve this?