Editor errors list (#360)
* Error list for the editor, gathers compile errors and takes you straight to them in your code editor
* Right clicking error gives you a context menu of Open in Code Editor or Copy Error
* Disable compile errors going to console whilst in tools mode
* When a build error occurs make sure the errors list dock widget is open.
https://files.facepunch.com/matt/1b1211b1/sbox_yu3L3pwgEx.png