Aditi: Creating a base template

[aditiakella]

• [x] create jinja template to unify project theme: base.html
• [x] create navbar with minilab section
• [x] Runtime Link

[krispykreme14]

verified by ketki

[dayita-ray]

verified by Dayita

[adhithin]

verified by Adi - jinja template to unify the project theme is there, with matching colors. the nav bar with minilab is working as well.