jump to line number and display line numbers

[Gary]

Nice to see this feature but there is a couple of minor bugs.

If you jump to line 1 then it actually takes you to line 2 and if you turn on or off line number display the cursor position does not move to the correct spot in the line, it can end up actually flashing in the line number display or being a couple of characters out in the code.

If you type a letter or move the cursor it returns back to the correct spot and then adds the character, so no big deal, just mentioned it as I spotted it just in case it has an impact else where that I have not found yet