[core] restructure to allow PIP packaging

OK - so I have to admit I *hate* the fact that PIP seems to require a
subdirectory named like the library.

But since the PIP package is something really nifty to have (thanks to
@tony again!!!), I updated the codebase to hopefully conform with what
PIP expects. Testruns so far look promising...

bumblebee_status/util/location.py

@@ -0,0 +1,103 @@
+"""Retrieves location information from an external
+service and caches it for 12h (retries are done every
+30m in case of problems)
+
+Right now, it uses (in order of preference):
+    - http://free.ipwhois.io/
+    - http://ipapi.co/
+"""
+
+
+import json
+import time
+import urllib.request
+
+__document = None
+__data = {}
+__next = 0
+__sources = [
+    {
+        "url": "http://free.ipwhois.io/json/",
+        "mapping": {
+            "latitude": "latitude",
+            "longitude": "longitude",
+            "country": "country",
+            "ip": "public_ip",
+        },
+    },
+    {
+        "url": "http://ipapi.co/json",
+        "mapping": {
+            "latitude": "latitude",
+            "longitude": "longitude",
+            "country_name": "country",
+            "ip": "public_ip",
+        },
+    },
+]
+
+
+def __expired():
+    global __next
+    return __next <= time.time()
+
+
+def __load():
+    global __data
+    global __next
+
+    __data = {}
+    for src in __sources:
+        try:
+            tmp = json.loads(urllib.request.urlopen(src["url"]).read())
+            for k, v in src["mapping"].items():
+                __data[v] = tmp.get(k, None)
+            __next = time.time() + 60 * 60 * 12  # update once every 12h
+            return
+        except Exception as e:
+            pass
+    __next = time.time() + 60 * 30  # error - try again every 30m
+
+
+def __get(name, default=None):
+    global __data
+    if not __data or __expired():
+        __load()
+    return __data.get(name, default)
+
+
+def reset():
+    """Resets the location library, ensuring that a new query will be started
+    """
+    global __next
+    __next = 0
+
+
+def coordinates():
+    """Returns a latitude, longitude pair
+
+    :return: current latitude and longitude
+    :rtype: pair of strings
+    """
+    return __get("latitude"), __get("longitude")
+
+
+def country():
+    """Returns the current country name
+
+    :return: country name
+    :rtype: string
+    """
+    return __get("country")
+
+
+def public_ip():
+    """Returns the current public IP
+
+    :return: public IP
+    :rtype: string
+    """
+    return __get("public_ip")
+
+
+# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4