Added hacknet node api functions for spending hashes. Fixed several bugs with v0.46.0. Rebalanced hash upgrades. continued working on terminal directory implementation

doc/source/netscript/hacknetnodeapi/spendHashes.rst

@@ -0,0 +1,26 @@
+spendHashes() Netscript Function
+================================
+
+.. warning:: This page contains spoilers for the game
+
+.. js:function:: spendHashes(upgName, upgTarget)
+
+    :param string upgName: Name of upgrade to spend hashes on. Must be an exact match
+    :param string upgTarget: Object to which upgrade applies. Required for certain upgrades
+
+    .. note:: This function is only applicable for Hacknet Servers (the upgraded version
+              of a Hacknet Node).
+
+    Spend the hashes generated by your Hacknet Servers on an upgrade. Returns a boolean value -
+    true if the upgrade is successfully purchased, and false otherwise.
+
+    The name of the upgrade must be an exact match. The :code:`upgTarget` argument is used
+    for upgrades such as :code:`Reduce Minimum Security`, which applies to a specific server.
+    In this case, the :code:`upgTarget` argument must be the hostname of the server.
+
+    Example:
+
+    .. code:: javascript
+
+        hacknet.spendHashes("Sell for Corporation Funds");
+        hacknet.spendHashes("Increase Maximum Money", "foodnstuff");