Fixed Inflector.underscore for use with acronyms, so HTML becomes html instead of htm_l #2173 [k@v2studio.com]

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Added create_session_table, drop_session_table, and purge_session_table as rake tasks for databases that supports migrations (MySQL, PostgreSQL, SQLite) to get a table for use with CGI::Session::ActiveRecordStore. Added configuration of session options through config.session_options in Rails::Configuration

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Fixed dependencies related infinite recursion bug when a controller file does not contain a controller class. Closes #1760. 

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Added dump of schema version to the db_structure_dump task for databases that support migrations #1835 [Rick Olson]

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Added TextHelper#cycle to cycle over an array of values on each hit (useful for alternating row colors etc) #2154 [dave-ml@dribin.org]

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Added better exception error when unknown column types are used with migrations #1814 [fbeausoleil@ftml.net]

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Added :multipart option to ActiveRecordHelper#form to make it possible to add file input fields #2034 [jstirk@oobleyboo.com]

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Added Hash#reverse_merge, Hash#reverse_merge!, and Hash#reverse_update to ease the use of default options. Added :connector and :skip_last_comma options to Array#to_sentence

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Added in-place editing support in the spirit of auto complete with ActionController::Base.in_place_edit_for, JavascriptHelper#in_place_editor_field, and Javascript support from script.aculo.us #2038 [Jon Tirsen] Moved auto-completion and in-place editing into the Macros module and their helper counterparts into JavaScriptMacrosHelper

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Added Array#to_sentence that'll turn ['one', 'two', 'three'] into 'one, two, and three' #2157 [m.stienstra@fngtps.com]

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Added :disabled option to all data selects that'll make the elements inaccessible for change #2167, #253 [eigentone]

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Fixed that TextHelper#auto_link_urls would include punctuation in the links #2166, #1671 [eigentone]

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Fixed "connection lost" issue with the bundled Ruby/MySQL driver (would kill the app after 8 hours of inactivity) #2163, #428 [kajism@yahoo.com]

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