Enable url redirect for activity dashboard

[NereusWB922]

Summary:

Fixes #278

Type of change:

• ✨ Enhancement

Changes Made:

• Add private method to navigate with current phase and repos
• Handle navigation in changePhase method
• Implement general phase validation
• Set phase in setupFromUrl
• Implement activity dashboard reload on repo change
• Add test case to verify the navigating behavior of changePhase method

Proposed Commit Message:

Enable URL redirect for other views

URL redirect currently only works for issueViewer. It is a useful feature
that improves user experience.

Let's implement a general URL redirect that works for other views as well.

[nknguyenhc]

A quick test shows that in activity dashboard, upon choosing a new repo, the dashboard is not refreshed.

[NereusWB922]

A quick test shows that in activity dashboard, upon choosing a new repo, the dashboard is not refreshed.

Thanks for the review! I just fixed this.