Merge pull request #159 from kruland2607/master

Remove dependency on SwingPreferences.
Russian translation updated, typos fixed
Merge pull request #160 from UncleRus/master

Russian translation updated, typos fixed
zh_CN implementation
update l10n properties, add logo
Merge pull request #161 from celeron533/master

Simplified Chinese Language Pack
Merge pull request #162 from kruland2607/master

Bug fixes.
Merge pull request #163 from kruland2607/master

Added sorting to simulation list.
Merge pull request #164 from kruland2607/master

jdk 1.7.0_45 drag & drop fix and simulation panel tool tip fix.
Merge pull request #165 from kruland2607/master

Updated jogl to 2.1.2.
Updated release information for 13.11.
Fix low limit on motor filter by impulse class to exclude motors at that limit.
This prevents, for example, full C motors with 10Ns impulse from showing up as Ds.
Update updates.php script for 13.11.
Updated web pages for 13.11 release.
Merge branch 'master' of https://github.com/openrocket/openrocket
Update release to 13.11dev