Always load helpers

[zerocrates]

The distinction between what is a global function and what is a theme helper is nebulous at best.

Whatever value there is in making it harder for developers to misuse helpers in controllers and models is offset, I think, by the annoyance of developers with legitimate needs to use particular helper functions and the outward unpredictability of which functions will cause a fatal error and where.

We draw a quasi-distinction between the helpers and "global" functions, but all the helpers are, in fact, global functions, it's just that their loading is somewhat delayed.

[patrickmj]

In some ways it's counter-intuitive, but ultimately I think it makes sense that to get started more rigidly enforced structure makes it easier to get going.

If we can (re?)draw a sharp distinction between theme helpers and globals (maybe even remove globals?), I think that would help target our documentation, our responses on the forums, and generally maintain sanity

I lean toward the idea that the job of theme helpers is to conceal the background OO work and syntax.

Pretty, yes, but nebulas bad.

[jimsafley]

Proposed solution:

Move all theme functions to application/libraries/globals.php and delete application/helpers/. Remove all references to HELPERS constant (defined in paths.php).