Some Editor fixes

[meetme2meat]

I was playing around grule-engine and found an editor section the editor application was not working as expected. The PR attempted to fix some of the issues.

Some known issue still exists the Unicode character for Space is breaking the Rule and Fact parsing logic. Will have it look separately.

[newm4n]

@meetme2meat ,

Thank you a lot for the attempt to fix this.
This sandbox feature is not finished since the last time I touched it.
Its been a while. As of now, I can't find good time to continue work on it.
Please be patient . I will find suitable time to look into this PR.