UI Fixes. Small bits of refactoring to aid decoupling of some classes.

Improvements to add study and save as dialogs.
Improvements to historical selection ui appearance.
Update of about screen for release 1.7.
Resetting files back to their old version.
Added back button to create profile page.

Closes #178
Removed comment, changed layout a bit
Copyright text
Added copyright text
Merge branch 'development' of https://github.com/ISA-tools/ISAcreator into development
Added copyright text
Merge pull request #194 from ISA-tools/development

Merging development with master