some New and some old

Added some new stuff (mainly the fix for the "new" ranks suffixes) and
removed some uneeded bits.
Also changed the gemfile so it will work on Windows too.

app/models/user.rb

@@ -21,8 +21,6 @@ class User < ActiveRecord::Base
   validates :email, uniqueness: {case_sensitive: false}, format: {with: /\A.+@(.+\..{2,}|\[[0-9a-f:.]+\])\z/i, message: "That doesn't look like an email address."}
   validates :ign, uniqueness: {case_sensitive: false}, format: {with: /\A[a-z\d_]+\z/i, message: "Username is invalid (a-z, 0-9, _)."}
 
-  validate :account_exists?, :if => lambda {|user| user.ign_changed? }
-
   has_many :blogposts
   has_many :comments
 
@@ -39,16 +37,16 @@ class User < ActiveRecord::Base
     !!self.retired
   end
 
-  def developer?
-    !!self.developer
+  def dev?
+    !!self.dev
   end
 
-  def trainingmod?
-    !!self.trainingmod
+  def mit?
+    !!self.mit
   end
 
-  def lead_mod?
-    !!self.lead_mod
+  def lead?
+    !!self.lead
   end
 
   def confirmed?
@@ -129,32 +127,6 @@ class User < ActiveRecord::Base
     end
   end
 
-  # def haspaid?
-  #   begin
-  #     response = open("https://sessionserver.mojang.com/session/minecraft/profile/#{CGI.escape(self.uuid)}", read_timeout: 0.5)
-  #     if response.status[0] == "200"
-  #       session_profile = JSON.load(response.read)
-  #       # unpaid accounts are called 'demo' accounts
-  #       return session_profile["demo"] == true
-  #     elsif response.status[0] == "204"
-  #       # user doesn't exist
-  #       return false
-  #     else
-  #       Rails.logger.error "---"
-  #       Rails.logger.error "ERROR: unexpected response code while checking '#{self.uuid}' for premium account"
-  #       Rails.logger.error "code: #{reponse.status}, body: '#{reponse.read}'"
-  #       Rails.logger.error "---"
-  #     end
-  #   rescue => e
-  #     Rails.logger.error "---"
-  #     Rails.logger.error "ERROR: failed to check for premium account for '#{self.uuid}'. Minecraft servers down?"
-  #     Rails.logger.error e.message
-  #     Rails.logger.error "---"
-  #   end
-  #   # mojang servers have trouble
-  #   return true
-  # end
-
   # def correct_case?(ign)
   #   begin
   #     http = Net::HTTP.start("skins.minecraft.net")
@@ -220,13 +192,6 @@ class User < ActiveRecord::Base
     self.name ||= self.ign
   end
 
-  def account_exists?
-    profile = self.get_profile
-    if !profile || profile["demo"] == true
-      errors.add(:ign, "'#{self.ign}' is not a paid account!")
-    end
-  end
-
   def strip_whitespaces
     self.name.strip! if self.name
     self.ign.strip! if self.ign