fix edit project members access link and page fixes refs #2745
Update user finding (by username) in admin teams members controller
Update user finding (by username) in teams_members (project team) controller
Update user finding (by username) in teams members (team of users) controller
username is default param to User
fix links in admin group view page (user links)
rewrite admin users controller (use 1 variable and find by username)
simple cleanup code %)
Merge pull request #2772 from zzet/bugfix/path_and_page-project-member-access-#2745

fix edit project members access link and page fixes refs #2745