Remove "Nag Screens" in Composer for unlicensed users #150
Description
I have decided to remove the "nag screen" which show the amount of processing SmartTemplates does and rather have a clear link to the new feature comparison screen which users can visit at their own leisure to make an informed decision on what kind of license is appropriate for them: feature comparison chart
Instead "premium features" can only be previewed / used (with the notification bar at the bottom) if a user has at least the standard license. Objectives:
- grow the user base with standard features by getting new users
- make a better incentive for people to get a standard license
- monetize better in order to make sure there is enough paid time to convert SmartTemplates into a web extension so it survives 2022. At this stage, we do not know whether access to legacy code will be removed or severely restricted
- make sure the compose APIs are extended appropriately so we can inject what we need
- provide the users with the ability to still insert local files with the new API model (this is currently forbidden for non-native extensions that are based on the "experimental API" paradigm.