upgrade tire to 0.5.2, update use of deprecated "text" search api

Gemfile

@@ -35,7 +35,7 @@ gem 'will_paginate_mongoid'
 gem 'rdiscount'
 gem 'nokogiri'
 
-gem 'tire'
+gem 'tire', "0.5.2"
 gem 'tire-contrib'
 
 gem 'dalli'

Gemfile.lock

@@ -83,14 +83,14 @@ GEM
       thor (>= 0.14.6)
     guard-unicorn (0.0.7)
       guard (>= 1.1)
-    hashr (0.0.21)
+    hashr (0.0.22)
     hike (1.2.1)
     i18n (0.6.9)
     journey (1.0.4)
     kgio (2.7.4)
     listen (0.5.0)
     method_source (0.8)
-    mime-types (1.19)
+    mime-types (2.2)
     mongo (1.6.4)
       bson (~> 1.6.4)
     mongoid (3.0.15)
@@ -99,7 +99,7 @@ GEM
       origin (~> 1.0)
       tzinfo (~> 0.3.22)
     moped (1.5.1)
-    multi_json (1.8.2)
+    multi_json (1.9.2)
     newrelic_moped (0.0.6)
       moped
       newrelic_rpm (~> 3.6.0)
@@ -121,7 +121,7 @@ GEM
       rack (>= 1.0)
     rack-timeout (0.1.0beta3)
     raindrops (0.10.0)
-    rake (0.9.2.2)
+    rake (10.2.2)
     rdiscount (1.6.8)
     rest-client (1.6.7)
       mime-types (>= 1.16)
@@ -148,7 +148,7 @@ GEM
       tilt (~> 1.1, != 1.3.0)
     thor (0.16.0)
     tilt (1.3.3)
-    tire (0.4.2)
+    tire (0.5.2)
       activemodel (>= 3.0)
       hashr (~> 0.0.19)
       multi_json (~> 1.0)
@@ -202,7 +202,7 @@ DEPENDENCIES
   rspec
   simplecov
   sinatra
-  tire
+  tire (= 0.5.2)
   tire-contrib
   unicorn
   voteable_mongo!

models/comment_thread.rb

@@ -98,7 +98,7 @@ class CommentThread < Content
         
     search = Tire::Search::Search.new 'comment_threads'
 
-    search.query {|query| query.text :_all, params["text"]} if params["text"]
+    search.query {|query| query.match :_all, params["text"]} if params["text"]
     search.highlight({title: { number_of_fragments: 0 } } , {body: { number_of_fragments: 0 } }, options: { tag: "<highlight>" })
     search.filter(:term, commentable_id: params["commentable_id"]) if params["commentable_id"]
     search.filter(:terms, commentable_id: params["commentable_ids"]) if params["commentable_ids"]
@@ -126,7 +126,7 @@ class CommentThread < Content
     if params["text"]
 
       search = Tire::Search::Search.new 'comments'
-      search.query {|query| query.text :_all, params["text"]} if params["text"]
+      search.query {|query| query.match :_all, params["text"]} if params["text"]
       search.filter(:term, course_id: params["course_id"]) if params["course_id"]
       search.size CommentService.config["max_deep_search_comment_count"].to_i