Revert "Updated the line redrawn mechanism. Also fixed https://github.com/npct/pct-shiny/issues/74"
Revert "Updated the line redrawn mechanism. Also fixed https://github.com/npct/pct-shiny/issues/74"

This reverts commit 077f8646eea66416dcabc00ef949591311099718.

npct/pct-shiny,npct/pct-shiny,npct/pct-shiny,npct/pct-shiny,npct/pct-shiny,npct/pct-shiny