Refactor cache fragment handling with read/write methods
Merge branch 'cache-fragment-refactor'

Closes #10819
Merge pull request #10853 from kennyj/deprecated-database_tasks

Remove Oracle / Sqlserver / Firebird database tasks were deprecated since 4.0.
Add changelog entry for database tasks removal #10853 [ci skip]
Merge pull request #10730 from tkhr/add_test_for_AR__CounterCache#update_counters

Add test for AR::CounterCache.update_counters
Merge pull request #10666 from YanhaoYang/master

Make "rails dbconsole" work with activerecord-postgis-adapter
Merge pull request #10627 from vipulnsward/destructive_symbolize

Change to destructive `deep_symbolize_keys` to avoid a new hash creation.
Merge pull request #10774 from chuckbergeron/validates-inclusion-of-accuracy-for-non-numeric-ranges

Greater accuracy for validates_inclusion_of on non-numeric ranges

Closes #10774, fixes #10593
Merge pull request #10542 from waseem/remove_require

Remove unnecessary require from active_support/inflector/methods.rb
Fix @tenderlove's name in changelog :sparkles:

[ci skip]
Moving the `pluck` and `ids` methods to their own delegate line.

These two methods aren't really statistical helper methods and don't
really belong in any other group which is being delegated for querying,
so I'm moving them to their own group of methods.

I've also changed the `:to => :all` hash syntax to `to: :all`.
Merge pull request #11109 from wangjohn/moving_pluck_and_ids_to_new_delegate_line

Moving the `pluck` and `ids` methods to their own delegate line.
Minor changes to actionpack/actionview Rakefile
remove trailing whitespace from `config/routes.rb` template.
Merge pull request #11112 from arunagw/rakefile_changes

Minor changes to actionpack/actionview Rakefile
Adding documentation to the Rails initialization guide. [ci skip]
Remove a comment related to 920753f

Since 920753f, double assignment isn't used anymore
Merge branch 'master' of github.com:lifo/docrails

Conflicts:
	guides/source/layout.html.erb
fix activerecord/examples/performance.rb#L101 syntax error
Merge pull request #11126 from tumayun/fix_activerecord_examples_performance_rb_syntax_error

fix activerecord/examples/performance.rb#L101 syntax error