Incorrect tests are runned from IDE

[igorwojda]

Clicking on the green arrow next to first on block runs only test inside this on block - OK
Clicking on the green arrow next to first it block runs all the tests instead of the only test defined inside this it block. I would expect that only test defined inside 'it' block will be runned

[raniejade]

Duplicate of raniejade/spek-idea-plugin#34. its inside on are only discovered during the execution phase so the runtime does not know about it when planning the test tree. The plugin should hide the gutter icons of its when inside an on.