Small serialization fixes

Author: Affie

src/Common.jl

@@ -72,7 +72,7 @@ global _invalidIds = [
     "VARIABLE", "FACTOR", "ENVIRONMENT", 
     "PPE", "DATA_ENTRY", "FACTORGRAPH"]
 
-global _validLabelRegex = r"^[a-zA-Z][\w\.\@]*$"
+global _validLabelRegex = r"^[a-zA-Z][-\w\.\@]*$"
 
 """
 $(SIGNATURES)

src/services/AbstractDFG.jl

@@ -905,7 +905,7 @@ function findVariableNearTimestamp(dfg::AbstractDFG,
 end
 
 findVariableNearTimestamp(dfg::AbstractDFG, timest::DateTime, regexFilter::Union{Nothing, Regex}=nothing;
-                          timezone=localzone(), kwargs...) =
+                          timezone=tz"UTC", kwargs...) =
     findVariableNearTimestamp(dfg, ZonedDateTime(timest, timezone), regexFilter; kwargs...)
 
 ##==============================================================================

src/services/Serialization.jl

@@ -322,7 +322,11 @@ function unpackFactor(
 
     fullFactorData = nothing
     try
-        packedFnc = fncStringToData(factor.fnctype, factor.data)
+        if factor.data[1] == '{'
+            packedFnc = fncStringToData(factor.fnctype, factor.data)
+        else
+            packedFnc = fncStringToData(factor.fnctype, String(base64decode(factor.data)))
+        end
         decodeType = getFactorOperationalMemoryType(dfg)
         fullFactorData = decodePackedType(dfg, factor._variableOrderSymbols, decodeType, packedFnc)
     catch ex