Removed whitespace in filename of motion pdf (identifier: PrefixNumber).
Motion detail template: Removed category from title (already in meta block)
Updated csv example files for motion and participants - in DE and EN used in demo database.
Updated motion csv import test.
Update INSTALL. OpenSlides for Windows 64-bit (fixed #810).
Updated German translation (some typos).
Merge pull request #816 from emanuelschuetze/translation

Updated German translation (some typos).
Merge pull request #815 from emanuelschuetze/csv-files

Updated CSV files with demo data. Minor fixes for motion.
Merge pull request #811 from normanjaeckel/Windows64bit

Update INSTALL. OpenSlides for Windows 64-bit (fixed #810).
Merge pull request #817 from ostcar/master

Issue 794
Fixed #814 Sorting of candidates in the assignment
Merge pull request #818 from ostcar/issue_814

Fixed #814 Sorting of candidates in the assignment
Fix README and INSTALL
Merge pull request #819 from normanjaeckel/BeforeRelease

Fix README and INSTALL
Release 1.4
Update version to 1.4.1-dev
Merge pull request #820 from normanjaeckel/Release_1.4

Release 1.4