Bug fixes Reliability analysis (#1650)
Bug fixes Reliability analysis (#1650)

* bug fixes for release 0.8.1.0 part I

I think something changed in .hasErrors() which influenced the init
phase resulting in some weird bugs.

* clearer comment

* a more appropriate bug fix using Tim's suggestion

* Change in showing errors

Errors are shown if 1 variable is present with an error, instead of if >
1 variable is present.

vankesteren/jasp-desktop,aknight1-uva/jasp-desktop,jasp-stats/jasp-desktop,vankesteren/jasp-desktop,AlexanderLyNL/jasp-desktop,FransMeerhoff/jasp-desktop,boutinb/jasp-desktop,AlexanderLyNL/jasp-desktop,boutinb/jasp-desktop,jasp-stats/jasp-desktop,aknight1-uva/jasp-desktop,TimKDJ/jasp-desktop,vankesteren/jasp-desktop,boutinb/jasp-desktop,boutinb/jasp-desktop,jasp-stats/jasp-desktop,FransMeerhoff/jasp-desktop,AlexanderLyNL/jasp-desktop,AlexanderLyNL/jasp-desktop,TimKDJ/jasp-desktop,jasp-stats/jasp-desktop,FransMeerhoff/jasp-desktop,FransMeerhoff/jasp-desktop,AlexanderLyNL/jasp-desktop,AlexanderLyNL/jasp-desktop,boutinb/jasp-desktop,TimKDJ/jasp-desktop,aknight1-uva/jasp-desktop,jasp-stats/jasp-desktop,vankesteren/jasp-desktop,jasp-stats/jasp-desktop,TimKDJ/jasp-desktop,vankesteren/jasp-desktop,TimKDJ/jasp-desktop,boutinb/jasp-desktop,vankesteren/jasp-desktop,FransMeerhoff/jasp-desktop,boutinb/jasp-desktop,boutinb/jasp-desktop,jasp-stats/jasp-desktop,AlexanderLyNL/jasp-desktop,FransMeerhoff/jasp-desktop,vankesteren/jasp-desktop,aknight1-uva/jasp-desktop,aknight1-uva/jasp-desktop,aknight1-uva/jasp-desktop,aknight1-uva/jasp-desktop,FransMeerhoff/jasp-desktop,AlexanderLyNL/jasp-desktop,TimKDJ/jasp-desktop,TimKDJ/jasp-desktop,jasp-stats/jasp-desktop,TimKDJ/jasp-desktop,FransMeerhoff/jasp-desktop,vankesteren/jasp-desktop