1) Optimise code folding code for better performance. 2) Moved all editor related preferences like Font size, Tab size, Brace matching, etc.from optionsto a new category "Editor" . 3) Added two new preferences - Plain editor mode (text/plain), Disable code folding. 4) Codemirror has its own limitations and lags for long text line. Using plain editor mode will help improve the speed as it does not have the overhead of syntax highlighting and code folding. Optionally, one can disable code folding in normal SQL mode.
