Implement most common `custom html & css & js` as customizations

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Linked issues

relates to
Issue Type Icon ESFJ-625 Implement most common `custom html & css & js` as customizations Priority: Medium Assignee:
Released
Issue Type Icon ESFC-490 Add images to Password page does not have any button to select the image from saved files Priority: Low Assignee:
Backlog
Issue Type Icon ESFC-491 All custom footer links tab appears white on hovering cursor in Dark theme Priority: Low Assignee:
Withdrawn