Summary:
The patch adds custom line edit widget which tries to expand its width to fit typed text. New widget is used by problemreporter and standardoutputview plugins to improve usability - old versions uses standard line edits with fixed size which is not comfortable for cases when we type long search string.

Old version:
{F5721229}

New version:
{F5721234}

Reviewers: #kdevelop, brauch

Reviewed By: #kdevelop, brauch

Subscribers: brauch, apol, broulik, kdevelop-devel

Differential Revision: https://phabricator.kde.org/D10705