Work around a regression in Qt 5 (QTBUG-31538)
Also prefer setting left+right margins instead of all margins for the
label.

Change-Id: I108de101239145295d37002aa989a959d8041c55
Reviewed-by: Jarek Kobus <jaroslaw.kobus@digia.com>

Change-Id: Ie97ae07b02499b4d8d80e006aa77ca3b802f39b3
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

More in line with current naming conventions.

Change-Id: I63f6677bd12d82f6749032996585d761f1a74fb7
Reviewed-by: Jarek Kobus <jaroslaw.kobus@digia.com>
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

Add a bit of space around "Context Lines" label.
Remove extra spinbox frame.

Change-Id: I69533c2fa3e93473f41194bdc36ce07042df9855
Reviewed-by: Jarek Kobus <jaroslaw.kobus@digia.com>

Change-Id: Iedfc0d59ecfe257ad5823cff39977bce82ada3a5
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

Helps avoiding trivial re-implementations.

Change-Id: Iaa2e6b92503a2b9553432568c2047c28899c7ea6
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

Change-Id: I2a40207ed3c4a5c07ba544d681aed6649a0b1a11
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>

Change-Id: If1553b6472a1dc2e905f7a1d39c4c3038e878430
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

Change-Id: Id5f11af0c6b7c6f3a4c3c65d108b8c0dd1ba2663
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>

Change-Id: I7675fc1d994020f94f42f6bd7b4f75aa29e6edf6
Reviewed-by: David Schulz <david.schulz@digia.com>
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>