now using checkbox delete for rm exps, fixed updated date on exp list

...eports/static/reports/app/controllers/groupsController.js

beat/web/reports/static/reports/app/services/urlService.js

...eb/reports/templates/reports/panels/experiment_table.html

beat/web/reports/templates/reports/panels/viewer.html

beat/web/reports/templates/reports/report.html

beat/web/reports/templatetags/report_tags.py