Translate, with help from Sovereign (translation backend needs an update/fixing)

Add Translate Chat checkbox back to chat floater, and enable it when applicable(with showTranslationCheckbox()).
Spend the night making it compile with AICurl~
Make the links work all nice despite our old link-unfriendly UI code.
Coax UI bits into agreeing with their new environment.
Updated the links because v-d seems to still have old ones...
Adv. Chat->Translation tab added..

Guess it's your move, again, Sovereign.

This was old, so I updated it, yayyy~

indra/newview/app_settings/settings.xml

@@ -16872,6 +16872,61 @@ This should be as low as possible, but too low may break functionality</string>
       <key>Value</key>
       <integer>1</integer>
     </map>
+    <key>TranslateLanguage</key>
+    <map>
+      <key>Comment</key>
+      <string>Translate Language specifier</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>String</string>
+      <key>Value</key>
+      <string>default</string>
+    </map>
+    <key>TranslateChat</key>
+    <map>
+      <key>Comment</key>
+      <string>Translate incoming chat messages</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>Boolean</string>
+      <key>Value</key>
+      <integer>0</integer>
+    </map>
+    <key>TranslationService</key>
+    <map>
+      <key>Comment</key>
+      <string>Translation API to use. (google|bing)</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>String</string>
+      <key>Value</key>
+      <string>bing</string>
+    </map>
+    <key>GoogleTranslateAPIKey</key>
+    <map>
+      <key>Comment</key>
+      <string>Google Translate API key</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>String</string>
+      <key>Value</key>
+      <string></string>
+    </map>
+    <key>BingTranslateAPIKey</key>
+    <map>
+      <key>Comment</key>
+      <string>Bing AppID to use with the Microsoft Translator API</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>String</string>
+      <key>Value</key>
+      <string></string>
+    </map>
     <key>InterpolationTime</key>
     <map>
       <key>Comment</key>