Add actiontypes

To represent action types in the CV I added the model, serializer, viewsets, initial data, tests, urls, adjustments for globalprovenance and some imports where it was required. I also added the table to sms-cv-core.schema.sql but I think this is obsolete for now right? Further changes to the sql files are also pending.

actiontypes only includes the generic action types. This and the definitions for initial data are based on what we discussed on action types in CodiMD and confluence.

The code itself is mostly copy and paste from other types (i.e. equipment type, platform type) with corresponding adjustments.

The first commit includes almost all important changes, the following ones fixed some typos, the status of action type (since I was not sure about it) and the migrations. Somehow I was to fast and committed also the changes of the static files caused by migrate which I had to revert.