[experiments, webapi] Bugfix: No more possible to create an experiment using an inaccessible  environment

Plotterparams merge

See merge request !222

[utils] in management/commands/install.py added default plotterparameters and extra plotterparameters

v1.2.0rc1 bugfixes

Closes #441, #393, and #460

See merge request !221

[plotters] in models updated deletable for plotterparameters with condition: if no reports are related to it

action buttons

is Private

cpulimit fix

See merge request !219

Add e2e testing via Protractor

See merge request !218