Use Array.apply to repeat a loop

In JavaScript we cannot easily repeat something N times, and
CoffeeScript's range loop compiles into complex JavaScript.

We could also use `Array.from({ length: N })`, but that's not supported
by old browsers like Internet Explorer 11.

app/assets/javascripts/managers.js.coffee

@@ -3,14 +3,13 @@
 App.Managers =
 
   generatePassword: ->
-    chars = "aAbcdeEfghiJkmnpqrstuUvwxyz23456789"
-    pass = ""
-    x = 0
-    while x < 12
-      i = Math.floor(Math.random() * chars.length)
-      pass += chars.charAt(i)
-      x++
-    return pass
+    possible_chars = "aAbcdeEfghiJkmnpqrstuUvwxyz23456789"
+
+    chars = Array.apply(null, length: 12).map ->
+      i = Math.floor(Math.random() * possible_chars.length)
+      possible_chars.charAt(i)
+
+    chars.join("")
 
   togglePassword: (type) ->
     $("#user_password").prop "type", type

app/assets/javascripts/polls.js.coffee

@@ -2,14 +2,10 @@
 
 App.Polls =
   generateToken: ->
-    token = ""
-    rand = ""
-    for n in [0..5]
-      rand = Math.random().toString(36).substr(2) # remove `0.`
-      token = token + rand
+    strings = Array.apply(null, length: 6).map ->
+      Math.random().toString(36).substr(2) # remove `0.`
 
-    token = token.substring(0, 64)
-    return token
+    strings.join("").substring(0, 64)
 
   replaceToken: (token) ->
     $(".js-question-answer").each ->