Fix syntax errors

[softworkz]

• according to the specification, "elseif" is also allowed, but the roku syntax checker (eclipse plugin) wants "else if"
• according to the brightscript spec, the dot operator can be used on an associative array to access the value for a fixed literal (known at compile time), while the array operator (square brackets) can also take variables as a key. But from my understanding there is no valid combination of a dot operator immediately followed by the array operator.