trying navigator.platform

do not add custom to input if not given

function renamed

improved filtering

unit testing plugin info updated

Assert library documentation added

Make more clearer documentation about unit testing 

Update light theme

docs: FAQ, update run, update import

Revert "Merge pull request #2398 from ethereum/compiler_from_pragma"

This reverts commit 87b69736, reversing
changes made to 148d0669.

pickup compiler version from pragma

fixes test import