pluging generator test fix

Improve dependency management and gemspec file for plugins

Extracted version from gemspec and placed it in its own file. This is consistent with the approach taken by "bundle gem", and is expected by gems such as svenfuchs/gem-release which can be used to bump / tag versions of gems.

Expanded meta-data in gemspec to include author, email, etc.; Defaults include "TODO" to prevent gems from being built without review.

This reverts commit 9d396ee8, reversing
changes made to fa2bfd83.

Reason: the change broke the build.

Allow ActiveModel-compatible instances to define their own partial paths

Unmangaling reverse_sql_order when function is used

Improve AM::Errors#include?

ActiveRecord calculation fail when having contains conditions based on select values

Add a proxy_association method to association proxies, which can be called by association extensions to access information about the association. This replaces proxy_owner etc with proxy_association.owner.

fix some typos

Replace unnecessary regexp in Dependencies#load_missing_constant

Constantize a regexp in Dependencies#load_missing_constant

refactored 'assert_redirected_to'

Fixes overriding of options[:html][:remote] in form_for() (Issue #2094)

remove unused variables warnings removed

enable Travis CI irc notifications to #rails-contrib on irc.freenode.org

remove deprication warning: ambiguous first argument; put parentheses or