#236 add Mailto widget to obfuscate emails
#242 add link to /staff/reports
#242 make dropdown with links to different reports
#242 fix for participants table structure and view
#242 fix for winners table structure and view
#251 small improvement in email confirmation
#252 improvements for User model in order not to save roles when changing type or coordinator
Merge branch 'issue_236' into develop
#242 Fixed styles
Merge branch 'issue_242' into develop
Merge branch 'issue_252' into develop
#251 Code review
#251 Fixed typo
Merge branch 'issue_251' into develop
#254 Fixed year cond
#254 Fixed phase cond
#255 add phase choice for reports
#255 move reports button to results/view page
Increased number of result rows
#255 add 2 more filters to reports and show not num place but text place