Search plugin looses search-result functionality after migration

[tgaertner]

Hallo,
tt_news has a plugin called "Searchform with result list (SEARCH)".
tx_news has two separate plugins for that "Search form" and "Search result".
The new "Search form" plugin has no option to show also the result how it behaves in tt_news but the migration just converts the old search+result to the new search-only plugin without adding the search-result one.
So I think we need to add this to the process.

[tgaertner]

I created a pull request for this: #56