Fix i18n issues + Refactorings

[AndyObtiva]

Hi,

I couldn't resist making changes sooner than the weekend. In addition to fixing all i18n issues and making translations work in all tabs, I simplified the look and feel by ditching big labels in favor of groups, which are more conventional in desktop apps. Desktop applications usually have a simpler more platform conformant look than web apps, unlike web apps, which usually have a highly custom look.

Change log:

• Fix issue with labels not being big enough for i18n text in dashboard
• Replace use of graphical_label with group because that is more conventional in desktop applications
• Fix i18n issues in Retries/Scheduled tables / Refactor extract Kuiq::Control code to I18n & Kernel to allow writing Glimmer custom control code the normal way for better maintainability
• Optimize i18n code
• Refresh time dynamically based on polling interval

Screenshots:

In French:

In English