Fix Settings panel crash in Mono.

flowLayoutPanel4 exceed the number of columns in tableLayoutPanel3 due to the span of 2.
Merge pull request #1597 from chrisbux/fix_1587

Fix Settings panel crash in Mono - Issue #1587.
Adjust Settings window placement of flowLayoutPanel4.

flowLayoutPanel4 was placed at location 2,2 in tableLayoutPanel3 which places it beyond the last column of tableLayoutPanel3 (2 columns).  Under Mono, this added a new column which made the Settings window look very bad.
Merge pull request #1598 from chrisbux/fix_settings_resize

Adjust Settings window placement of flowLayoutPanel4.
Merge pull request #1600 from pmiossec/french_translation

French translation