Redesign for Manager and Agent configuration tabs

[JuanjiJG]

This issue involves redesigning the Manager and Agent configuration tabs.

First, we'll start with the Manager tab, and later the Agents tab.

Done:

• HTML and CSS interface, tab logic not implemented. All the interface components (tabs, buttons, list/detail view) and directives are ready.
• Make the sidebar links to work properly.
• Implement JSON/XML viewers for new configuration sections. Now it's more responsive and adaptative to the app space.
• Adjust JSON/XML viewers to correctly fetch raw content for each specific section.
• Implement the logic to fetch configuration and show it on the interface.
  • This includes reviewing each section to adapt it to the real configuration output, keeping in mind what options can be repeated, and what not.

Some ideas:

• Interface redesign keeping in mind future major app improvements such as configuration editing.
• Make the configuration sections appear depending on the current extension's settings.
• Evaluated configuration.

[jesusgn90]

XML viewer for Management > Configuration done: #764

[JuanjiJG]

August 16th update:

• Creating some UI mockups for the new Management > Configuration redesign.
• Discussing some UI layout decisions for each configuration category.

[JuanjiJG]

August 17th update:

For now, we'll begin with hard-coded HTML so the team can see the mockups turned into real app interface.

Regards,
Juanjo

[JuanjiJG]

August 20th update:

We've changed the branch: new-configuration-tab
The previous branch was removed.

We'll implement this new tab independently from the already existing Configuration tab, until we're sure that we can fully replace it with this new redesign.

We're also going to add the ui-router framework for better routing management on this new tab.

Regards,
Juanjo

[JuanjiJG]

September 14th update:

The main interface for this new Configuration section has been done. Some of the sections are subject to change after more researching on the new API call to get manager/agent configuration.

We discarded the option of using ui-router, it was impossible to integrate it into our current routing system.

I'll update the first comment with the new tasks for this issue.

Regards,
Juanjo

[JuanjiJG]

September 17th update:

We received some feedback for this new tab, and now we'll implement the changes across all the files.

Regards,
Juanjo

[JuanjiJG]

Done here: #914

Regards,
Juanjo