contrib: initialization bugfix after lua52 port

The _NAME field was missing in the contrib table. Thanks to Jorg
Thalheim for reporting this.

contrib/init.lua

@@ -11,7 +11,7 @@ local wrequire = require("vicious.helpers").wrequire
 
 -- Vicious: widgets for the awesome window manager
 -- vicious.contrib
-local contrib = {}
+local contrib = { _NAME = "vicious.contrib" }
 -- }}}
 
 -- Load modules at runtime as needed

helpers.lua

@@ -33,8 +33,8 @@ local scroller = {}
 
 -- {{{ Helper functions
 -- {{{ Loader of vicious modules
-function helpers.wrequire(table,  key)
-    local module = rawget(table,  key)
+function helpers.wrequire(table, key)
+    local module = rawget(table, key)
     return module or require(table._NAME .. "." .. key)
 end
 -- }}}

init.lua

@@ -22,6 +22,7 @@ local helpers = require("vicious.helpers")
 -- Vicious: widgets for the awesome window manager
 local vicious = {}
 vicious.widgets = require("vicious.widgets")
+--vicious.contrib = require("vicious.contrib")
 
 -- Initialize tables
 local timers       = {}