PHP will now load content into textarea container, but replacing </textarea> with altered tag
This ensures the actual textarea container isn't escpaed early
This replacement is reversed back to the original by the contentCleanup function
Tab now renamed on saving file under new name
Clear history moved to a repurposed contentCleanUp function in JS file
Clear & set active line class to line 1
Global variables removed from JS file
Plugins system evolved, now including setInterval
Seperate CodeMirror instances per tab
backupOpenFiles plugin created
Minor fixes & improvements
