Fix instruction info not showing

Changed a string comparison from greater than to less than. Now
everything works.
Handle assignment params in instructions

Now an assignment instruction displays:
ReturnVarName = Instr(param0, param1, ...)
Deactivated autocompletion on 'space' key
Remove the param type info in instruction description
Prevent autocomplete from showing in a comment
Fixed some positioning issues
Fix options params crashing parser
Fix some suggestions show/hide events
Fix scrolling autocomplete positioning

Finally!
Add mouse hover/click events for autocomplete suggestions
Fix suggestions list scrolling

Items in the suggestions list now scroll properly if they have
margin/padding/borders > 0