Fix wrong command IDs for ConfigureUpstreamPush/Fetch
Fix wrong command IDs for ConfigureUpstreamPush/Fetch

This results in the corresponding menu items being disabled. Also
added Git command category. A couple of commands were duplicated which
resulted in some warnings in the error log (command handler
conflicts).

Change-Id: Ieefc4023036cd11c7fcbf4cb867b2ba51c59b76c
Signed-off-by: Mathias Kinzler <c9114e173c04a61176760ee4881bfdc97edad677@sap.com>
Signed-off-by: Matthias Sohn <446760a3fbea85cd5f8f4f5c3de304fe3a38014f@sap.com>

jdcasey/EGit,wdliu/egit,mdoninger/egit,collaborative-modeling/egit,collaborative-modeling/egit,bols-blue/eclipse_maven_autobuild_sample,paulvi/egit,rickard-von-essen/egit,rickard-von-essen/egit,bols-blue/eclipse_maven_autobuild_sample,jdcasey/EGit,wdliu/egit,SmithAndr/egit,blizzy78/egit,chalstrick/egit,paulvi/egit,SmithAndr/egit