5 - Simplify plugin settings

[jonathanwindle-zz]

Screenshot of Plugin Configuration Page Take 2013-09-13

Currently the plugin configuration feels clunky. Settings should be simplified for easier readability and configuration.

Examples based on current configuration screen as of this writing:

• "CAS.php Path" should attempt to auto detect the library location based on a documented expected location within the plugin folder. If auto-detected setting should be auto populated.
• The "phpCAS::client() parameters" section (besides giving it a better name maybe "CAS Server") should take a single URL for the cas server such as "https://fa.bellevuecollege.edu:8443/cas". The CAS version parameter should be auto populated based on server detection and then modifiable by the user.
• The "Treatment of Unregistered User" section will likely be replaced when feature #4 and #8 is complete.
• The "LDAP parameters" section should also be edited to support a URI for the LDAP server such as ldaps://ldap.bellevuecollege.edu:984. BASE DN will still need to be populated by the user.
• Help should be added for each parameter to explain the expected values.

[TriptiSharma]

Separating this "Help should be added for each parameter to explain the expected values." task, since its a general UI option for all the fields - #38

[jonathanwindle-zz]

The string for BaseDN may need to be converted to an all upper case string before saving to the database.

This is related to a bug experienced this morning where the BaseDN value equaled "DC=bellevuecollege,DC=edu". The value seemed to trigger a message stating that the WordPress CAS Client was not properly configured.

More testing is needed to properly evaluate if this is a bug that needs to be fixed for better user experience.

[TriptiSharma]

Please add instructions in Readme about the Default CAS File path - Issue #27

[TriptiSharma]

Task Notes:

1. CAS.php Path - The first time a user activates the plugin, code will try to pre-populate this field by checking in this location dirname(FILE).'/CAS/CAS.php' NOTE - The task for the user to put CAS.php file in the above location should be completed in Issue #27
   If the file exists in that location the field is pre-populated with this path otherwise its left empty.
2. "phpCAS::client() parameters" is replaced by CAS Server A new field CAS Server URI is created which replaces the 3 fields - Server hostname, Port and path. Code will parse the URI supplied by the user and will derive hostname, port and path from it.
3. A new field 'LDAP URI' is created under LDAP parameters, which replaced LDAP hostname and LDAP Port. This field is parsed to retrieve hostname and port. If the user does not specifies a Port and Scheme (ldap:// or ldaps://) , the port is defaulted to 389 and the URI is appended with ldap://. If the port is not specified and the Scheme is ldaps://, Port is defaulted to 636. Port is not visible to user in this case on the settings page.