JBIDE-15768 - Can't add Blackberry plug-ins listed in Cordova Discovery
Wizard

Adds a new status handler for cases when discovery wizard can not
successfully parse the plugin.xml. CordovaPluginManager now converts the
parse errors to proper status and a new status handler is implmented.
trim plugin.xml values

trims the whitespace when reading values from plugin.xml as they may
have characters that affects UI.