Refactor helpers.

Rebind Handlebars helpers to drop the pesky options hash for standalone
helpers that don't need it. Move block helpers (which do need the
Handlebars options/context) to a separate file for special handling.

src/helpers/block-helpers.coffee

@@ -0,0 +1,58 @@
+###*
+Block helper definitions for HackMyResume / FluentCV.
+@license MIT. See LICENSE.md for details.
+@module helpers/generic-helpers
+###
+
+
+
+HMSTATUS = require '../core/status-codes'
+LO = require 'lodash'
+_ = require 'underscore'
+unused = require '../utils/string'
+
+
+
+###* Block helper function definitions. ###
+BlockHelpers = module.exports =
+
+
+
+  ###*
+  Emit the enclosed content if the resume has a section with
+  the specified name. Otherwise, emit an empty string ''.
+  ###
+
+  section: ( title, options ) ->
+    title = title.trim().toLowerCase()
+    obj = LO.get this.r, title
+    ret = ''
+    if obj
+      if _.isArray obj
+        if obj.length
+          ret = options.fn @
+      else if _.isObject obj
+        if (obj.history && obj.history.length) || (obj.sets && obj.sets.length)
+            ret = options.fn @
+    ret
+
+
+
+  ###*
+  Emit the enclosed content if the resume has the named
+  property or subproperty.
+  ###
+
+  has: ( title, options ) ->
+    title = title && title.trim().toLowerCase()
+    if LO.get this.r, title
+      return options.fn this
+    return
+
+
+
+  ###*
+  Return true if either value is truthy.
+  @method either
+  ###
+  either: ( lhs, rhs, options ) -> options.fn @ if lhs || rhs