Use right projector logo (as in stable/1.5.x branch).
Merge pull request #1257 from emanuelschuetze/projector-logo

Use right projector logo (as in stable/1.5.x branch).
Updated English language files.
Merge pull request #1259 from normanjaeckel/Translation

Updated English language files.
New poll slides for motion and assignment. (Fixed #862)

Move result table from assignment slide to assignment poll slide.
Use "result" in singular for motion and election results.