Bug fixes

The focus on this release was stability and performance tuning.

Additional bug fixes:

- #427662: Consistent user experience in dialog
- #785418: Resize form-text

Major changes in terms of how the connector modules are organized / should behave and how we handle the backend data. Be extra careful making backups before you update.

• #595630 requested by Jose Reyero et. al, patch by myself: start separation of data level and UI level of l10n_server

  This introduces the l10n_server base module which is now required by l10n_community.
    The base module now provides the admin UI for projects and releases.
    Will move schema handling and expand admin functionality in future changes.
    
    UPDATE WARNING: manually edit l10n_community.info to comment out the l10n_server dependency
    before enabling l10n_server, or Drupal will not let you to. Then restore l10n_community.info.

• #595630 followup by myself: reassign ownership of schema to l10n_server instead of the l10n_community UI module

  IMPORTANT UPDATE NOTICE: run update.php, because the code will expect the new table names, while the DB will have the old names.
    You already had l10n_community enabled, so just running updates without fiddling with enabling l10n_server first is fine.

• #595630 follow up by myself: rethink how connectors work and relate to localization server

  - Established new Localization server connectors module category.
    - Merge l10n_localpacks and l10n_project into l10n_drupal.
    - Migrate settings and database connector information to new module.
    - Move PEAR/Tar and potx requirement checking to l10n_drupal.
    - Reorganize settings page order and titles.
    - Move source code parsing warnings to l10n_drupal.
    - Move Drupal version detection to l10n_drupal.
    - Moved extractor.inc functionality fully to l10n_drupal.
      This was entirely Drupal specific.
    - Update tests to use new connector UI and l10n_drupal properly.
    - Added new hook_l10n_server_source_info() and hook_l10n_server_connector_info() 
      hooks which are used to describe sources and connectors respectively.
      Separated the 'files' source from the 'drupal' connector to some degree.

• Improve the setup experience by linking to admin pages when languages or projects are missing. Also suggest l10n_pconfig at multiple places to properly set up the plural formulas.
• #595630 followup: missing projects and connectors config; adding functionality to add and edit projects on the UI
• #595630 follow up by myself: add functionality to manage releases (add, edit, reset, delete)
• #773116 noticed by droplet: forgot to add l10n_server.install file, doh
• #789044 by myself: add support for uploading source files; when used with the l10n_gettext conncetor, now you can use l10n_server to translate **whatever software you wish** beyond Drupal
• #789044 by myself follow up by myself: forgot to add gettext submodule, huh

There was a minor fix in the sample sub-project. I was locking the wrong table. Other than that, this release is the same as RC2.

Fixing Upload dependency #728912: Only a grey button (dependency on upload module)

Bug fixes and some new features

bug fixes