Mariusz Glebocki authored Feb 23, 2019 and Kurt Hindenburg committed Feb 24, 2019

Summary:
Make the feature work and improve it slightly - the weight used as bold
is dependent on selected font's weight. "Regular" will use "Bold", but
e.g. "Thin" will use "Light".

`styleName` is almost always redundant - all font properties like
weight, stretch, etc, are stored separately.

Source Code Pro 12pt with font weight set to: Extra Light, Light,
Regular, Medium, Semibold, Bold:
{F6631951}

Test Plan:
In every case: turn on "Draw intense colors in bold font" in Edit
Profile → Appearance.

**The feature:**

* Use some font which has "Bold" style available and set it to "Regular"
  style.
* Run: `printf '\033[1mBold|\033[0m|Normal\n'`
* "Bold|" text should use bold font.

**Different weights:**

* Use some font which has multiple weights available (e.g. Thin, Bold,
  Heavy, ...), e.g. Source Code Pro.
* Select lightest style.
* Run: `printf '\033[1mBold|\033[0m|Normal\n'`
* Select "regular" font style.
* Bold text for "regular" style should be bolder than the text for
  lightest style should be.

Reviewers: #konsole, #vdg, hindenburg

Reviewed By: #konsole, hindenburg

Subscribers: hindenburg, ngraham, konsole-devel

Tags: #konsole

Differential Revision: https://phabricator.kde.org/D19266