RubyForge: emacs-rails-0.5.4

User-visible Changes:
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* added mailers support
* added fixtures support
* fixed incorrect indentation in snippets [#9460]
* added support template types in layouts menu
* added support haml template engine
* use `compile` to run `rake tests`
* ask to save modified buffers before run rake
* added "quick switch" to support models and unit tests

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