Plugin upload failed modal should be more descriptive

[canstudios-nicolaw]

Expected Behaviour

When I try to upload a plugin and it fails to upload, I should be told the reason why so that I can fix it.

Actual Behaviour

If I try to upload a plugin and it fails, I see an error modal with 'Plugin upload failed' which is not very useful.

Suggested

I suggest we have a more descriptive error modal for the following scenarios:

• The version number is not unique
• The plugin is not compatible with this authoring tool (underlying framework version not compatible)
• The file size of this plugin is too large
• The bower.json is invalid

The extra description can just be a simple sentence shown underneath the Plugin upload failed heading. Any information on this modal would be a big help.

Versions

• Authoring Tool Version: 0.10.0
• Framework Version: 4.3.0