E2403. Mentor-meeting management [Mentor Meeting Management and Emails Notifications]

[Bala-Logesh]

Changes Proposed in Pull Request:

• Create a new view that shows the team listing in a more intuitive and easy way.
• Add input fields for each team where mentors and instructors can enter new, view, edit dates when mentor meetings were conducted.
• Instructors can edit all dates for mentor meetings regardless of the team.
• Mentors can also edit dates but only for the team they are mentoring.
• Add more than three dates for the mentor meetings easily by pressing the + icon at the end of the view.
• The meeting dates should not be editable for teams having capacity less than 50%.
• Show user information in the view.
• Added a new feature such that users are automatically emailed when they are added to a team. Also, mentors are automatically emailed a different email when they are added to a team.
• Added a new function to the mailer_helper class for mail specifically sent to user/mentors when added to a team.
• Added view partials to handle the HTML format of the new emails being sent.
• Slightly changed the generic_message function in the mailer class to handle more cases.
• Also added test cases to check that users/mentors are emailed when added to teams now.

Previous PRs made to the repository

PR#2769
PR#2772

Mentions:
@efg