Updated RuboCop to the latest version

Regenerated `.rubocop_todo.yml` file.
Added settings to `.rubocop.yml` file, as recommended at
https://www.mediawiki.org/wiki/Manual:Coding_conventions/Ruby#Base_configuration

Change-Id: Id9de4c1013b849cf56c7d7163d90c66ea708bceb

.rubocop.yml

@@ -1 +1,23 @@
 inherit_from: .rubocop_todo.yml
+
+AllCops:
+  StyleGuideCopsOnly: true
+
+Metrics/LineLength:
+  Max: 100
+
+Metrics/MethodLength:
+  Enabled: false
+
+Style/Alias:
+  Enabled: false
+
+Style/SignalException:
+  Enabled: false
+
+# TODO: uncomment when the time comes
+# Style/StringLiterals:
+#  EnforcedStyle: single_quotes
+
+Style/TrivialAccessors:
+  ExactNameMatch: true

.rubocop_todo.yml

@@ -1,5 +1,6 @@
-# This configuration was generated by `rubocop --auto-gen-config`
-# on 2014-10-21 15:03:04 +0200 using RuboCop version 0.26.1.
+# This configuration was generated by
+# `rubocop --auto-gen-config`
+# on 2015-09-02 17:15:05 +0200 using RuboCop version 0.33.0.
 # The point is for the user to remove these configuration records
 # one by one as the offenses are removed from the code base.
 # Note that changes in the inspected code, or installation of new
@@ -7,18 +8,10 @@
 
 # Offense count: 1
 # Cop supports --auto-correct.
-Style/EmptyLines:
-  Enabled: false
-
-# Offense count: 2
-# Cop supports --auto-correct.
-Style/LeadingCommentSpace:
-  Enabled: false
-
-# Offense count: 1
-# Cop supports --auto-correct.
+# Configuration parameters: MultiSpaceAllowedForOperators.
 Style/SpaceAroundOperators:
-  Enabled: false
+  Exclude:
+    - 'tests/browser/features/step_definitions/math_steps.rb'
 
 # Offense count: 2
 # Cop supports --auto-correct.
@@ -26,14 +19,8 @@ Style/SpaceAroundOperators:
 Style/SpaceInsideHashLiteralBraces:
   EnforcedStyle: no_space
 
-# Offense count: 9
+# Offense count: 13
 # Cop supports --auto-correct.
 # Configuration parameters: SupportedStyles.
 Style/StringLiterals:
   EnforcedStyle: double_quotes
-
-# Offense count: 2
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles.
-Style/TrailingBlankLines:
-  Enabled: false

Gemfile

@@ -1,4 +1,4 @@
 source "https://rubygems.org"
 
 gem "mediawiki_selenium", "~> 1.5.0"
-gem "rubocop", require: false
+gem "rubocop", "~> 0.33.0", require: false

Gemfile.lock

@@ -1,9 +1,9 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    ast (2.0.0)
-    astrolabe (1.3.0)
-      parser (>= 2.2.0.pre.3, < 3.0)
+    ast (2.1.0)
+    astrolabe (1.3.1)
+      parser (~> 2.2)
     builder (3.2.2)
     childprocess (0.5.6)
       ffi (~> 1.0, >= 1.0.11)
@@ -58,10 +58,9 @@ GEM
       watir-webdriver (>= 0.6.11)
     page_navigation (0.9)
       data_magic (>= 0.14)
-    parser (2.2.0.pre.7)
+    parser (2.2.2.6)
       ast (>= 1.1, < 3.0)
-      slop (~> 3.4, >= 3.4.5)
-    powerpack (0.0.9)
+    powerpack (0.1.1)
     rainbow (2.0.0)
     rest-client (1.8.0)
       http-cookie (>= 1.0.2, < 2.0)
@@ -69,20 +68,19 @@ GEM
       netrc (~> 0.7)
     rspec-expectations (2.99.2)
       diff-lcs (>= 1.1.3, < 2.0)
-    rubocop (0.27.0)
+    rubocop (0.33.0)
       astrolabe (~> 1.3)
-      parser (>= 2.2.0.pre.6, < 3.0)
-      powerpack (~> 0.0.6)
+      parser (>= 2.2.2.5, < 3.0)
+      powerpack (~> 0.1)
       rainbow (>= 1.99.1, < 3.0)
       ruby-progressbar (~> 1.4)
-    ruby-progressbar (1.7.0)
+    ruby-progressbar (1.7.5)
     rubyzip (1.1.7)
     selenium-webdriver (2.47.1)
       childprocess (~> 0.5)
       multi_json (~> 1.0)
       rubyzip (~> 1.0)
       websocket (~> 1.0)
-    slop (3.6.0)
     syntax (1.2.0)
     thor (0.19.1)
     unf (0.1.4)
@@ -98,4 +96,4 @@ PLATFORMS
 
 DEPENDENCIES
   mediawiki_selenium (~> 1.5.0)
-  rubocop
+  rubocop (~> 0.33.0)