Make loadacts more user friendly

[DebugOk]

About the PR

Helps Velcro out, and makes it easy for mappers to use his acts without having to do anything complicated.

To load from a file stream, the entries must be laid out like this

- action: !type:WhateverActionComponent
  assignments:
  - 0: SLOT
  name: Action's Name

If an action lacks a name, it wont work through the open file dialogue, but it'll still work if the file name is passed directly. No additional checks are done to make sure the action is valid

[IamVelcroboy]

Decent