Fix indents & organize imports (res & src)
Return an empty list if there is no data and no error

Fixes #195
Merge pull request #194 from ratan12/Fix_indentations

Fix indents & organize imports (res & src)
Merge pull request #196 from d-sko/networktask_fix

Don't return null for list tasks with empty results in NetworkTask
Fix some missing translations in DetailView

These are gone missing in the in the last rewrite:
- media status
- media type
- user status for manga
Now they're back :)