Translation Enablement + some small changes

...ConfigDialog.cpp
- -Increase overall size of window (for NON Mac only so far) - this
eases the translation as in non EN languages

... Pages.CCP
- Changed 2 fixed button sizes (to allow proper translation)
- Correction: if Directoy Browsing was Aborted without selection - the
previous value was deleted
- Chooses the 2nd column to search for "New" text in case of 2 text
colums (short and long)
- All the rest Translation enablement

...DiarySidebar.cpp
- enable translation of date formats

(cherry picked from commit 3bbc68a277e743e610630795bb60dc515ced0355)
Merge pull request #879 from Joern-R/pull

Translation Enablement + some small changes