[enh] Nginx conf tweaks for theme

[alexAubin]

The problem

Currently, only ynhpanel.js is injected in app pages which integrate the yunohost portal button / overlay. This JS currently injects the CSS in the page. This is fine but for theme, we now want to inject two more files (the custom CSS and custom JS) ... and thisis a whole mess because those are then loaded after the inital "DOM loaded" event which makes some stuff harder to implement.

Solution

Inject all those file directly, like ynhpanel.js was.

PR Status

Tested and working

How to test

Try to set a custom theme with YunoHost/SSOwat#122

Validation

• Principle agreement 0/2 :
• Quick review 0/1 :
• Simple test 0/1 :
• Deep review 0/1 :

[alexAubin]

Planning to add this to the 3.5.x which I would like to release early next week ... so this should be merged in the next few days