Update bundler to 1.13.0 and fix warnings

Gemfile

@@ -25,7 +25,7 @@ gem 'sitemap_generator'
 gem 'newrelic_rpm'
 gem 'spdx'
 gem 'sanitize-url'
-gem 'semantic', github: 'librariesio/semantic'
+gem 'semantic', git: 'https://github.com/librariesio/semantic'
 gem 'simple-rss'
 gem 'faraday-http-cache'
 gem 'fog-aws'
@@ -58,7 +58,7 @@ gem 'escape_utils'
 gem 'github_urls'
 gem 'mail', require: ['mail', 'mail/utilities', 'mail/parsers']
 gem 'pictogram'
-gem 'rails-timeago', github: 'librariesio/rails-timeago'
+gem 'rails-timeago', git: 'https://github.com/librariesio/rails-timeago'
 gem 'multi_fetch_fragments'
 gem 'rack-attack'
 gem 'rack-attack-rate-limit', require: 'rack/attack/rate-limit'

Gemfile.lock

@@ -1,13 +1,13 @@
 GIT
-  remote: git://github.com/librariesio/rails-timeago.git
+  remote: https://github.com/librariesio/rails-timeago
   revision: 55fa55f038fd413bc79567d03a718eefe41a2414
   specs:
     rails-timeago (2.14.0)
       actionpack (>= 3.1)
       activesupport (>= 3.1)
 
 GIT
-  remote: git://github.com/librariesio/semantic.git
+  remote: https://github.com/librariesio/semantic
   revision: a5374ac095868cf79444c1506bbbe3a8c3ad4379
   specs:
     semantic (1.4.2)
@@ -514,4 +514,4 @@ RUBY VERSION
    ruby 2.3.1p112
 
 BUNDLED WITH
-   1.12.5
+   1.13.0