vis: Figure out good UX for caching the test filter
Add a (x) to reset the value: As the firefox browser won't support a clear button for input type "search", we need to add a CSS button to reset the value of text field. Also, add a JS function to clear the test result.
Make persistence optional (checkbox?): Local storage is used to store the filter while navigating around and re-visiting the webpage. This patch will provide the option to enable/disable the local storage.
Make filter more visible: Split the test case into an array and update the background-color of the canvas if the array string matches to testfilter.
This Fixes: #43
Signed-off-by: Bhanuprakash Modem firstname.lastname@example.org