Fix the problem that the dictionary couldn't be set to 'ISpell default' (in case the KDE-global dictionary isn't ISpell default). The problem is that the internal name (in KSpellConfig) for 'ISpell default' is the empty string. But we treat the empty string as the KDE-global dictionary.
Fix the problem that the dictionary couldn't be set to 'ISpell default' (in case the KDE-global dictionary isn't ISpell default). The problem is that the internal name (in KSpellConfig) for 'ISpell default' is the empty string. But we treat the empty string as the KDE-global dictionary.

svn path=/trunk/kdepim/; revision=263977

lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi