[CodeIssues] Adding an issue that highlights when a base class does not have a parameterless constructor, and the child class does not invoke any of the base class constructors.
[CodeIssues] Updating the NoDefaultConstructorIssue to take into account multiple constructors in the child class. If no constructors are defined in the child, the issue is put against the class identifier, whereas if constructors are defined, the issue is put against each constructor that has an issue.
[CodeIssues] Updated the NoDefaultConstructorIssue so that the description and message match the compiler error.
[CodeIssues] Updating the NoDefaultConstructorIssue to ignore inaccessible constructors and to only look at the direct base type. I also updated the issue text to contain the compiler error number, and altered the way that the string was formatted so that the format string is passed into TranslateString.
[CodeIssues] Removed the baseType field from the NoDefaultConstructorIssue since it can be overwritten if there is a nested type that has an issue. The code now resolves the base type when visiting the constructor to make sure it is correct.
Merge branch 'default-constr' of https://github.com/adamconnelly/NRefactory into adamconnelly-default-constr

Conflicts:
	ICSharpCode.NRefactory.CSharp/ICSharpCode.NRefactory.CSharp.csproj
	ICSharpCode.NRefactory.Tests/ICSharpCode.NRefactory.Tests.csproj