added sample to gen metro report
separated out css so can work on it
fixed story icon vertical position
a little extra space before examples table
changed inconclusive icon to match tile color
basic tile toggle working
fixed show hide selecor/logic, now completely shows or hides scenarios
made entire tile clickable
removed old checkboxes
tile filtering into main codebase
update metro html approval tests and remove temp metro sample
removed temp design dir
metro approvals updated for tags test
Merge pull request #153 from jason-roberts/MetroReportTweaks

Metro report tweaks
added but to method name conventions
refactored DefaultMethodNameStepScanner & MethodNameMatcher
added But ExecAttr & refactored exec attr tests
cleaned up scanners' tests
implemented ButGiven, ButWhen and ButThen attribs & conventions