Fix build.gradle problems:

Installer missing url.png
UploadArchives erroring on local systems due to missing changelog
Adding branch name improperly.

build.gradle

@@ -84,8 +84,6 @@ task changelog(type: JenkinsChangelog) {
     // skip if there is no forge jenkins pass
     onlyIf {
         project.hasProperty('forgeJenkinsPass')
-        // Not sure what abrar was trying to do here...
-        //project.file("build/distributions/${project.name}-${project.version}-changelog.txt").text = ""
     }
 
     outputs.upToDateWhen { false } // never up to date
@@ -108,13 +106,14 @@ task crowdin(type: CrowdinDownload) {
 }
 
 def extraTxts = [
-    changelog, // yeah we can do thi, because gradle and groovy are awesome
     "CREDITS-fml.txt",
     "LICENSE-new.txt",
     "MinecraftForge-Credits.txt",
     "Paulscode SoundSystem CodecIBXM License.txt",
     "Paulscode IBXM Library License.txt"
 ]
+if (project.hasProperty('forgeJenkinsPass'))
+    extraTxts += changelog
 
 outputJar {
     classifier = 'universal'
@@ -135,6 +134,7 @@ installer {
     classifier = 'installer'
     from extraTxts
     from "src/main/resources/forge_logo.png"
+    from "src/main/resources/url.png"
     rename "forge_logo\\.png", "big_logo.png"
 }
 
@@ -177,6 +177,7 @@ task makeMdk(type: Zip) {
     into ('eclipse') {
         from 'mdk/eclipse'
     }
+    if (project.hasProperty('forgeJenkinsPass'))
         from changelog.output
     from ('mdk') {
         filter(ReplaceTokens, tokens: [
@@ -211,6 +212,7 @@ tasks.build.dependsOn 'launch4j'
 // MAVEN
 
 artifacts {
+    if (project.hasProperty('forgeJenkinsPass'))
         archives changelog.output
     archives file("build/distributions/${project.name}-${project.version}-installer-win.exe")
     archives makeMdk
@@ -365,7 +367,7 @@ String getVersionFromJava(File file)
 
     if (branch && branch != 'master' && branch != 'HEAD' && branch != minecraft.version && branch != minecraft.version + '.0')
     {
-        if (!(branch.endsWith('.x') && minecraft.version.startsWith(branch.substring(0, branch.length() -1))))
+        if (!(branch.endsWith('.x') && minecraft.version.startsWith(branch.substring(0, branch.length() -2))))
             out += "-$branch"
     }