Added options to give more control over rope paths

    * Ability to override rope project root and .ropeproject folder
    * Added path argument to `PymodeRopeNewProject` which skips prompt

    * Options added:
        'pymode_rope_project_root', 'pymode_rope_ropefolder'
Merge pull request #433 from bendavis78/rope-dir-options

Added options to give more control over rope paths