More helpful message when starting server

v2 of pull request based on feedback from @rafaelfranca, @schneems, and @carlosantoniodasilva
Merge pull request #9202 from gkop/more_helpful_message_when_starting_server

More helpful message when starting server
fix typos in AR. lots of them.
Merge pull request #9778 from vipulnsward/fix_typos_in_ar_v1

fix typos in AR. lots of them.
Digest auth should not 500 when given a basic header.
Merge pull request #9022 from braddunbar/digest-basic-auth

Digest auth should not 500 when given a basic header.
instruct RDoc to only parse Ruby files under lib [Fixes #9779]
1. Change from each to each_value since we did not use key
2. drop assignment of value to sum in test
Merge pull request #9782 from vipulnsward/change_from_each_to_each_key_habtm

Change from each to each_value;drop assignment in habtm
Revert "instruct RDoc to only parse Ruby files under lib [Fixes #9779]"

This reverts commit c24528fbc94dea9946a563be3bed9559583bdc57.
Fix failing tests related to where values change to strings

Introduced in 5dc2e3531babcbdc165884d1a47cbcd13455522d.
change from blank? to empty? on obvious string values  to save extra method calls
Merge pull request #9784 from vipulnsward/change_from_blank_to_empty_on_string

Change from blank? to empty? on obvious string values  to save extra calls
Revert "Merge pull request #9784 from vipulnsward/change_from_blank_to_empty_on_string"

This reverts commit 9c4c05fc82e997b722dec4068c3aa27eaee69eb8, reversing
changes made to 4620bdcefd0c88905a005f191496df887877b8f3.

Reason: They're not completely interchangeable, since blank? will also
check for strings containing spaces.
Use @app_env_config instead of @env_config

Check pull request #9789 for more information.
Initialize @app_env_config now that the var name has changed

Check 862389c9537dbb6f65fd26c4325e07607ed437b5 for more background.
drop an unused hash; change slang to SPECIAL
Merge pull request #9792 from vipulnsward/drop_unused_hash

drop an unused hash; change slang to SPECIAL