Add gzo/admin panel

[GanstaZ]

Will add a new gzo/admin system.

Type of change:

• [x] New feature (Enhancement)

Checklist:

• [x] Correct branch:
• [x] Code follows coding guidelines: master & 3.3

Issue id - 110

[GanstaZ]

Ignore prosilver & add an independent style for area.

109

[GanstaZ]

As I'm dropping development of 2.4 & switching to 3.4.. some parts will need some refactoring.

[GanstaZ]

Everything connected to theme/style will be updated/improved in separate PR.