fixed language strings loading and folder dialogs

now languages are loaded only once :) not 23432943 times.
open folder dialog in wizard now remebers last selected folder
Merge remote-tracking branch 'upstream/master'
Fixed bug in SQL Script and error in MediaBrowser
trying to resolve debug file concurrency

not a critical issue, the try catch does not impact program workflow,
only concurrent writes to the file do now work :( is for debug only so
is acceptable for now
Merge pull request #5 from msavazzi/master

fixed your bug :P hahahahah + some other small goodies