Fixes misspelled HTML tags.

Also adds PhpStorm project files to gitignore (I'm trying out this IDE).
Merge pull request #36 from TriptiSharma/issue-18

Issue 18 :  Changed approved

Testing for this request included:

    1. Verifying fields appear under Network > Network Settings> CAS Client
    2. Verifying access for a new user
    3. Verifying access for an existing user with invalid LDAP values on wordpress settings
    4. Verifying security for password encryption. For this test, the new issue #39 was added.
Updated plugin form setting fields.

Resolved #19. Merged CAS parameters (Hostname, Port, path) into one field.
Wrote a parsing function to parse the new field. Same for LDAP parameters.

Conflicts:
	wordpress-cas-client.php