Noosfero, version 0.25.1 ""

This is a bugfix release. Follow a shortlog from this version:

Antonio Terceiro (9):
      Displaying image title at <title> tag
      Adding a setup action to the initscript
      Default values for variables in initscript
      Fixing PostgreSQL example configuration
      General review of installation instructions
      Allowing more flexibility for themes
      More info on upgrades
      Do not say "n enteprises" if they are disabled
      MySQL-compatible random record selection

Daniel Cunha (1):
      Fixing duplicated comments problem due to double clicks

Daniela Soares Feitosa (1):
      Fixed redirections of noosfero

Joenio Costa (4):
      Theme isn't a setting of environment (reverting mistake made by commit d273ad)
      Saving products without validation in migration to set category to products without category
      Fixing embeds from tv.softwarelivre.org
      Bumping version number

Leandro Nunes dos Santos (2):
      The FeaturedProductsBlock doesn't works with noosfero 0.25.0 version.
      The catalog show all the enterprise products. When the enterprise has a lot of products and the user access
        the catalog the system crash or works slowly.

Rodrigo Souto (1):
      Enterprises with wrong environments