Extract SIG and SIG_INFO from cluster spots. Closes #47

core/utils.py

@@ -0,0 +1,14 @@
+from core.constants import SIGS
+
+# Utility function to get the icon for a named SIG. If no match is found, the "circle-question" icon will be returned.
+def get_icon_for_sig(sig):
+    for s in SIGS:
+        if s.name == sig:
+            return s.icon
+    return "circle-question"
+
+# Regex matching any SIG
+ANY_SIG_REGEX = r"(" + r"|".join(list(map(lambda p: p.name, SIGS))) + r")"
+
+# Regex matching any SIG reference
+ANY_SIG_REF_REGEX = r"[\w\/]+\-\d+"