Simplify Rules/Tasks method calling

[mjbrisebois]

Instead of a bunch of array's in array's,

"__tasks__": [
    [ "Check.auth.isAdmin",  "< input.auth" ]
]

It could just be an evaluated string. This makes it easily recognizable as code that is being run.

"__tasks__": [
    "Check.auth.isAdmin( this.input.auth )"
]

[mjbrisebois]

Populater will have to register all the rules/tasks methods for that to work

[mjbrisebois]

@mottersheadt
Example of restrictive syntax

Avoid looking like code so that we don't have to support other typical code operations

"__tasks__": [
    "Check.auth.isAdmin | input.auth, params.hello, hey()"
]

[mjbrisebois]

Idea for non-restrictive reference replacement syntax

"__tasks__": [
    "=Check.auth.isAdmin( =input.auth=, =params.hello=, =hey()= )="
]