Saving is unituitive

[Arnei]

Based on discussion about #1131.

Unlike Studio, the Editor has a rather open workflow where you can go through the steps in any order you wish or skip them (for example, you could start with cutting the video, skip editing the metadata, go straight to thumbnail generation and then back to cutting). This results in new users being unsure about whether their changes are being saved anywhere or how to save them. Until the users stumble upon the finish view and slowly figure out that this is where they save ALL changes they made.

It would be great if this could be made more intuitive for new users. Potential ideas:

• Include a "Go to saving"-like button in each view (Credit to Olaf and Melanie for this one)
• Rename "Finish" to something more intuitive?

[majosch]

Maybe some kind of status indicator for each step would make sense - eg. a gray dot/icon for status "unchanged" (no assets for this step exist), yellow/red for unsaved changes (assets for this step are added) and green/blue for saved changes (assets for this step exist and no changes made) ? Subsequently a save-button for each step would be required: Save cutting marks, Save subtitles, Save preview image...

Furthermore a summary of the made changes for each step on the Finish-step could be displayed - including warnings about unsaved changes.

Based on the status of the steps, it would be possible to show only relevant workflows to the user, e.g. if there are no saved changes in the subtitles-step, do not list the publish-assets workflow.
Or - if using a single workflow - passing workflows configuration values based on the status of each step, so only necessary workflow steps are executed. (#272)