Added classification presentation handling. Closes #6

- created classificatio presentation singlton
- integrated classificatio presentation in table view

Signed-off-by: neara <alkadur@gmail.com>
Added features container. Updated single feature. Refs #7. Closes #2

Signed-off-by: neara <alkadur@gmail.com>
Merge branch 'master' of github.com:neara/feature-sorter

Getting code changes from Anna
1. Added half-baked toolbar to the keyboard which allows closing the keyboard when done with it
2. Added classification to the sample item created, allowing hard-coded changes of values, effort and as a result - table item color.