translation updated
resized main window to fit translations without scrolling

Now all translations fit in wothout scrolling (tested de, eo, fr and ru)
Only UPDATE readStatus if it changed
Merge pull request #490 from bitnukl/master

German translation update and main window resize
Merge pull request #491 from grant-olson/check_readstatus_before_update

Only UPDATE readStatus if it changed
Merge branch 'upstream/master'

Conflicts:
	src/bitmessageqt/bitmessageui.py