V0.51.4 (#847)

* BladeBurner
    * nerfed int exp gained.

    Documentation
    * purchaseServer specifies what happens on failure.
    * Fixed typo in recommended bitnode page.
    * Removed misleading ram requirements for hacking factions.

    Netscript
    * growthAnalyze handles Infinity correctly.

    Misc.
    * Faction Augmentation will list how much reputation is required even after
      that goal has been reached.
    * Removed dollar sign in travel agency confirmation.
    * Fixed typo in alpha-omega.lit

* the game save text no longer obstruct the save game and options button

* the text editors now remember where your cursor was and restores it when loading the same script again.

* v0.51.4

src/NetscriptFunctions.js

@@ -924,7 +924,7 @@ function NetscriptFunctions(workerScript) {
 
             // Check argument validity
             const server = safeGetServer(ip, 'growthAnalyze');
-            if (typeof growth !== "number" || isNaN(growth) || growth < 1) {
+            if (typeof growth !== "number" || isNaN(growth) || growth < 1 || !isFinite(growth)) {
                 throw makeRuntimeErrorMsg("growthAnalyze", `Invalid argument: growth must be numeric and >= 1, is ${growth}.`);
             }
 
@@ -2037,7 +2037,7 @@ function NetscriptFunctions(workerScript) {
             const cost = getPurchaseServerCost(ram);
             if (cost === Infinity) {
                 workerScript.log("purchaseServer", `Invalid argument: ram='${ram}'`);
-                return Infinity;
+                return "";
             }
 
             if (Player.money.lt(cost)) {