Only set options from command-line if they were explicitely specified
Use 'value()' instead of 'operator[]()' to avoid accidental setting of keys
Merge pull request #101 from jbaiter/master

Only set options from command-line if they were explicitely specified
Fix some German translations. Especially the keyboard shortcuts.
Fixes some misspelled words and style
Fixes syntax, grammar, punctuation and style

Arranged syntax errors, grammar, punctuation, misspelled words and style of translation.
Merge pull request #115 from kant/patch-2

Fixes syntax, grammar, punctuation and style
Merge pull request #114 from kant/patch-1

Fixes some misspelled words and style
Merge pull request #113 from ospalh/feature-besseres-Deutsch

Fix some German translations.