Recursive fragment control problem fixed

[SinanMtl]

This PR is fixes recursive fragment name control problem. For example:

Sample query

query {
   checks {
      ...Check
   }
}
fragment Check on Check {
  id
  name
}

fragment CheckNode on Check {
  id
  name
}

collectFragments method controls fragments names with RegExp but RegExp parser searching like this: /\.\.\.Check/. This is wrong matching because search with contain value. Match with two fragments ['Check', 'CheckNode'].

The problem fixes with end of line operator ($). For example: /\.\.\./Check$