Fixed error missing GithubSslSupport

The github plugin no longer contains the ssl support.
Jetbrains removed it them self and replaced it with the code I used.

for more information: http://git.jetbrains.org/?p=idea/community.git;a=blobdiff;f=plugins/github/src/org/jetbrains/plugins/github/api/GithubApiUtil.java;h=6a07e8798f64b12418933533f9c125854b4eacb3;hp=885f252d65e4df3efca2df71588dcf812a1194b3;hb=597982bcf19db31cfdff8c165e7e440e71950791;hpb=3287d5d260902cb673be607e7a85e986e5e063de