any 'weird' symbols in your string can be interpeted different. so if you would like to plot "It's A New Day" as a string you should add a \ symbol before the ' symbol like so: \' .
to not edit all your texts add add this, you can use REGEX (regular espression) to automaically do this on the fly.
Regex can also be used to manipulate a string with HTML code inside to replace/modify/remove those html tags.
This should solve both your issues at once...
more info;
http://www.w3schools.com/jsref/jsref_obj_regexp.asp
Regex is not easy to learn but VERY powerfull, it's well worth learning 
here is an online tool to experiment with regex:
http://regexr.com/
I hope it helps.
Happy hacking!