set default solidity compiler version

package.json

@@ -156,7 +156,7 @@
     "build_debugger": "browserify src/app/debugger/remix-debugger/index.js -o src/app/debugger/remix-debugger/build/app.js",
     "browsertest": "sleep 5 && npm run nightwatch_local",
     "csslint": "csslint --ignore=order-alphabetical --errors='errors,duplicate-properties,empty-rules' --exclude-list='assets/css/font-awesome.min.css' assets/css/",
-    "downloadsolc_root": "wget --no-check-certificate https://solc-bin.ethereum.org/soljson.js",
+    "downloadsolc_root": "wget --no-check-certificate https://solc-bin.ethereum.org/bin/soljson-v0.5.1+commit.c8a2cb62.js -O soljson.js",
     "lint": "standard | notify-error",
     "make-mock-compiler": "node ci/makeMockCompiler.js",
     "minify": "uglifyjs --in-source-map inline --source-map-inline -c warnings=false",

src/app/tabs/compile-tab.js

@@ -66,6 +66,7 @@ module.exports = class CompileTab {
       timeout: 300,
       allversions: null,
       selectedVersion: null,
+      defaultVersion: 'soljson-v0.5.1+commit.c8a2cb62.js',
       baseurl: 'https://solc-bin.ethereum.org/bin'
     }
     self.data.optimize = self._components.queryParams.get().optimize
@@ -218,7 +219,6 @@ module.exports = class CompileTab {
       <select onchange=${onchangeLoadVersion} class="${css.select}" id="versionSelector" disabled>
         <option disabled selected>Select new compiler version</option>
       </select>`
-    if (self.data.allversions && self.data.selectedVersion) self._updateVersionSelector()
     self._view.version = yo`<span id="version"></span>`
 
     self._view.warnCompilationSlow = yo`<i title="Compilation Slow" style="visibility:hidden" class="${css.warnCompilationSlow} fa fa-exclamation-triangle" aria-hidden="true"></i>`
@@ -458,7 +458,7 @@ module.exports = class CompileTab {
         try {
           const data = JSON.parse(json)
           allversions = data.builds.slice().reverse()
-          selectedVersion = data.releases[data.latestRelease]
+          selectedVersion = self.data.defaultVersion
           if (self._components.queryParams.get().version) selectedVersion = self._components.queryParams.get().version
         } catch (e) {
           addTooltip('Cannot load compiler version list. It might have been blocked by an advertisement blocker. Please try deactivating any of them from this page and reload.')