Skin home page and layouts (header, footer).

BioVeL logos added, etc.
Hide SoapLab services from the registration page.

SoapLab is no longer supported.
Use the BioVeL leaf as the favicon image.
Update content licence to CC-BY-SA.
Update to logo with the cog.
Create BiodivCat service categories.
BiodivCat search synonyms set.

These are just a heavily cut down sub-set of the BioCat ones for now.
Make the "Powered by" BioCat logo smaller.
Merge remote-tracking branch 'origin/rh/biovel-next' into next

* origin/rh/biovel-next:
  Make the "Powered by" BioCat logo smaller.
  BiodivCat search synonyms set.
  Create BiodivCat service categories.
  Update to logo with the cog.
  Update content licence to CC-BY-SA.
  Use the BioVeL leaf as the favicon image.
  Hide SoapLab services from the registration page.
  Skin home page and layouts (header, footer).
Merge remote-tracking branch 'origin/rails2.3.18' into next

* origin/rails2.3.18: (48 commits)
  Tidied up the Gemfile
  Fixed the delayed job constant in biocat_main.rb and switched to using annotations gem instead of plugin
  Removed unwanted files from index
  Delay::Job changed to Delay::Worker
  Use the my_annotation gem
  Makes a require to the annotation model in the gem
  Removed require_dependancy to annotation plugin
  Deleted annotations plugin in place of my_annotations gem
  Removed validates_existence plugin - replaced for gem
  Removed markaby plugin - replaced for gem
  Deleted delayed_job plugin
  Added Delayed Job gem
  Replaced the acts_as_trashtable plugin from vendor/plugins with an equivalent gem
  Replaced the acts_as_trashtable plugin from vendor/plugins with an equivalent gem
  Removed the recaptcha plugin from vendor/plugins as it does not seem to be used
  Moved the asset packager plugin to lib and its init.rb to config/initializers
  Moved the Delayed Job plugin to a delayed job gem
  Replaced the validates_url_format_of plugin from vendor/plugins with an equivalent gem
  Replaced the redbox plugin from vendor/plugins with an equivalent gem
  Added *.rails2 and .gitkeep files to .gitignore that appeared after attempt to move to Rails 3 from using the upgrade plugin
  ...
Merge remote-tracking branch 'mygrid/rails2.3.18' into next

* mygrid/rails2.3.18:
  Version number is 1.5.0 to reflect the change in rails version and removal of frozen and baked-in plugins
Merge remote-tracking branch 'mygrid/rails2.3.18' into next

* mygrid/rails2.3.18:
  Removed Gemfile.lock from .gitignore
Merge remote-tracking branch 'mygrid/rails2.3.18' into next

* mygrid/rails2.3.18:
  Switched to using mysql2 in config/database.yml.pre
Merge branch 'biocatalogue-rails2.3.18' into biovel-next
Resolved the conflicts with biocatalogue/rails2.3.18 branch.
Merge remote-tracking branch 'origin/rails2.3.18' into biovel-next
Bumped the version number to 1.5.1 after code-freeze.
Changed the way require rdoc is written to suit new rdoc version requirements
removed validates_url gem as not compatible with rails 3 and specified factory_girl version
New files added from running Rails new