Improve search to more smarter

[veeeeeRySeXy]

Right now we have primitive search with complete phrase match, but in case when you really don't know right name of package it can be a problem.

New search logic should works like this:

1. Split entered phrase on words.
2. Check containing each word in any resource text (name, description, url, etc.).
3. If all search words found we must consider this package appropriate.