[BIOCAT-109] - Added 'maturity of service' link when BIOVEL_ENABLED == true.

Before saving the maturity link, this code 'curl's the page of the link, regexp searches for the id of the maturity level div, and saves this along with the URL in the same annotation.
Forgot to include some new files to last commit
quick fix for if the maturity_url added isn't a valid link
Using open-uri instead of curl with no SSL Verification on for the maturity annotation. Also changed some info text about the annotation
Checks url is valid before opening it (maturity annotation)
Added script to check and save updates to BioVeL Maturity/Actions
Added checks to see of BIOVEL_ENABLED variable is defined. Small wording update for the maturity level annotation field.
Rake task to update any changed maturity annotations
Small word change for the service maturity level annotation field.
Allow users to edit the maturity annotation and display error messages when using invalid BioVeL Wiki link
Merge branch 'maturity_level' of github.com:myGrid/biocatalogue into maturity_level

# By Aleksandra Nenadic
# Via Aleksandra Nenadic
* 'maturity_level' of github.com:myGrid/biocatalogue:
  Small word change for the service maturity level annotation field.
Small wording change.
Error checking improved for maturity level URL. Humanized annotation attribute names for edit annotation popup dialog.
Merge branch 'maturity_level' into biovel-master