Last saved based off of last modified file in project.
Writing tests for last saved metadata for projects.
Last saved works by checking all files within project.
Merge branch 'dev' of github.com:swryan/OpenMDAO-Framework into dev
Merge pull request #1435 from swryan/gui

gui - image viewer and file tree fixes/updates
Merge pull request #1436 from swryan/gui

fix image viewer test for windows
Merge pull request #1437 from swryan/gui

gui - bug fixes
last_saved metadata based off of modified timestamp of _settings.cfg project file.
Finished test. Bug is fixed.
Merge remote-tracking branch 'upstream/dev' into fix-last-modified-stamp
Merge branch 'fix-last-modified-stamp' of https://github.com/crobinsonut/OpenMDAO-Framework into fix-last-modified-stamp
Merge pull request #1439 from crobinsonut/fix-last-modified-stamp

Fix last modified stamp