fix last used abcd config
ref #8562: continue work on preference pages
ref #8634: fix NPE and biocase provider for dna search
ref #8494: layout issues in abcd import preference page
ref #8494: save last abcd import configurator
ref #8494: abcd config nom. code is set to default nom. code
ref #8489: improve table on dist status preference page
ref #8488: adapt all term related preferences, abcd preference page
ref #8385: better handling of distr preferences and term related preferences
ref #8389: fix NPE and smaller issues in preferences
ref #8389: revert disabling of allowOverride for default selection
ref #8389: disable allowOverride when 'use default' is selected
ref #8385: fix general and abcd pages
ref #8385: adapt strucutre of db prefs to local prefs
ref #8385: adapt local and db preference pages