BuildView: Fix broken load of project plugin targets

Summary: Most changes are only a little code cosmetic, like unwrap lines or remove spaces

Test Plan:
Here it was reproducible e.g. by changing between my sessions "kate" and "sonnet". I think you can guess what they are.

1. Start Kate with session "kate" -> Project Targets shown
2. Switch to "sonnet" -> No Project Targets shown. I think there are no (however) defined (any illuminating tip is appreciated)
3. Switch back to "kate" -> Also NO Project Targets shown, but should!

With this patch are at 3. the Project Targets back again

Reviewers: Kate, sars

Reviewed By: Kate, sars

Subscribers: sars, kwrite-devel, Kate

Tags: Kate

Differential Revision: https://phabricator.kde.org/D17339