Fix - Modified team rendering logic to use team id instead of code to prevent exposing the team's code directly on public routes

[wickathou]

Changes

• Fixed error with event backend middleware not returning the user team with meta to verify if user can submit project
• Created new team controller method to get all teams as mongo documents to enable save() operations
• Renamed getTeam team controller method to getUserTeam to make it more readable and clear that it only needs the userId to find the user team
• Modified most team controller methods to use the teamId instead of teamCode for cases where the team is being modified using the team id instead of team code
• Created new route /:slug/team/teamId in team routes to GET team by id and to PATCH add candidates to teams using the team id, instead of team code
• Deleted unused commented code and console logs
• Modified team service and updateSelectedTeam, updateTeam and candidateApplyToTeam redux actions to use teamId instead of team code