[#LIB-155] Refactor configuration store/read, reduce repetitive code
[#LIB-155] Refactor configuration store/read, reduce repetitive code | AttributeFormat
[#LIB-155] Refactor configuration store/read, reduce repetitive code | found bug with ImageReader/writer for prefs
[#LIB-155] Refactor configuration store/read, reduce repetitive code | removed dependency on store type
[#LIB-155] Refactor configuration store/read, reduce repetitive code | LdapImageWriterConfig bug fixed