Add documentation for new observer enable/disable feature.

Always flush logger at exit

Prior to this change, running code via script/runner would demonstrate
different logging behavior than running the same code via a rake task.
In production mode the script/runner approach would always flush the
logger, but the rake-based approach would not automatically flush the
logger. This discrepancy violates the principle of least surprise, and
it could lead to the loss of important production logging data.

This change removes special-case code in the "runner" command, and
replaces it with a general solution to ensure that the logger gets
flushed at exit. This solution works for "runner", "console", "server",
rake tasks, and any other process that loads the Rails environment.

config.generators.orm = false when skipping active record. LightHouse #5796

distance_of_time_in_words calculates wrong no of years 

Multiparameter POLA (principle of least authority) with respect to time_select fixes. See LH4346

Rails::Server outputs 'http://' even when running over SSL

Adding ruby-prof gem for ruby platform only #jruby

Add association join conditions to JOIN clause, not WHERE

Fix for lighthouse #6741

rename test case to better describe use case

Display custom asset routes in `rake routes`

Patch for performance test: make it run with ruby19/minitest

Adding jruby-openssl in Gemfile by default. #jruby

Tidying up the language in wrap_parameters.rb