Merge pull request #47 from koketso122/master

Closes #29
Removed old QT user files
Before merge
Before commit
Closes #20
Some Changes to the errorwindow.ui layout
Goup error

Goup error into one dialogue
Merge remote-tracking branch 'upstream/master'
Validate student number and write errors

Updated the part where we validate our student numbers and added a part
where by a user can save errors on a text file
Remove duplicates

I just added a code that remove duplicate errer in my list
Functionality to save error messages

The user can select a path to save the error and it also checks for
invalid student numbers
Merge pull request #52 from Serame/master

Functionality to save errors in a date named text file and also to detect invalid student numbers
Merge
Small changes to save error