Add rack-mini-profiler to development (#848)

Gemfile

@@ -25,6 +25,9 @@ gem 'rails'
 platforms :ruby do
   gem "activerecord-explain-analyze"
   gem "pry-byebug"
+  gem 'rack-mini-profiler'
+  gem "rbtrace"
+  gem 'stackprof'
 
   gem 'net-imap', require: false
   gem 'net-pop', require: false

Gemfile.lock

@@ -161,6 +161,7 @@ GEM
     faraday-http-cache (2.4.1)
       faraday (>= 0.8)
     faraday-net_http (3.0.2)
+    ffi (1.15.5)
     ffi (1.15.5-java)
     fiber-local (1.0.0)
     foreman (0.87.2)
@@ -225,6 +226,8 @@ GEM
       tomlrb
     mixlib-shellout (3.2.7)
       chef-utils
+    msgpack (1.6.0)
+    msgpack (1.6.0-java)
     multi_json (1.15.0)
     net-imap (0.3.4)
       date
@@ -251,6 +254,7 @@ GEM
     octokit (4.25.1)
       faraday (>= 1, < 3)
       sawyer (~> 0.9)
+    optimist (3.0.1)
     parallel (1.22.1)
     parser (3.2.0.0)
       ast (~> 2.4.1)
@@ -283,6 +287,8 @@ GEM
     racc (1.6.2)
     racc (1.6.2-java)
     rack (2.2.6.2)
+    rack-mini-profiler (3.0.0)
+      rack (>= 1.2.0)
     rack-test (2.0.2)
       rack (>= 1.3)
     rails (6.1.7.2)
@@ -316,6 +322,10 @@ GEM
       thor (~> 1.0)
     rainbow (3.1.1)
     rake (13.0.6)
+    rbtrace (0.4.14)
+      ffi (>= 1.0.6)
+      msgpack (>= 0.4.3)
+      optimist (>= 3.0.0)
     regexp_parser (2.6.2)
     rexml (3.2.5)
     rspec-core (3.12.0)
@@ -379,6 +389,7 @@ GEM
       actionpack (>= 5.2)
       activesupport (>= 5.2)
       sprockets (>= 3.0.0)
+    stackprof (0.2.19)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
     thor (1.2.1)
@@ -442,13 +453,16 @@ DEPENDENCIES
   pry-byebug
   pry-rails
   puma (~> 5.6)
+  rack-mini-profiler
   rails
+  rbtrace
   rspec-rails
   rubocop
   rubocop-performance
   rubocop-rails
   rubocop-rspec
   selenium-webdriver
+  stackprof
   yard
   yard-activesupport-concern