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Adding tests for article belongs_to_forum method
Adding "My Communities" to the user menu

ActionItem1030
Adding tests to verify solution to AI1030

ActionItem1030
Adding partial "manage_communities"

ActionItem1030
Create FilePresenter infra

The idea is never to give a Upload File to a view. That must
always work with a File Presenter providing overwrite methods
and specific views/partials.

ActionItem2373
Correct BlockHelperTest class name
Remove IE6 suport and CSS loading from Tango theme
Hotspot for customize profile_image_link (profile block)
correct bad html generation
Makes FilePresenter to work with all noosfero tests
Makes FilePresenter to work with all noosfero tests II

ActionItem2373
Makes price details to work with "other costs"

closes ActionItem2519
correct br tags
Translate disable_products_for_enterprises_enabled env setting

The disable_* settings for environment are incoherent with the
user interface and with the code itself. This changes correct
only one incoherent setting as an example how to do with all
others.
INSTALL.chat: applies to squeeze, not wheezy
custom-forms: include wysiwyg on form description of custom_forms_plugin

AI2778
UploadedFile: support site-wide configuration of max upload size

Configuration is done in config/noosfero.yml, key `max_upload_size`.
Supported value formats: 1KB, 1MB, 1GB, 1TB. MB is the default if the
unit is omitted.

5MB is still the default and will be used in case no configuration -- or
an invalid value -- is supplied.

Based on the original implementation proposal by Aurélio A. Heckert at
https://gitorious.org/noosfero/noosfero/merge_requests/345

ActionItem1780
Merge commit '8dbebef'
Merge commit 'bedad5b'