OTNumList: rename class to NumList
OTNumList: rename files to NumList.{h,c}pp
Merge pull request #471 from toxeus/renameOTNumList

OTNumList: rename to NumList
Rename getTransactionNumber functions to match the getTransactionNumbers message.
Merge pull request #472 from benma/renamings

Rename getTransactionNumber functions to match the getTransactionNumbers...
fix: rename OTLog to Log
Merge pull request #474 from toxeus/fixOTLog

fix: rename OTLog to Log
server/MainFile: remove unneeded include
opentxs: merge copy&pasted CLI helper code
ext/Helpers: small improvements
ext/Helpers: remove dead code
Merge pull request #476 from toxeus/cleanupCLIHelper

opentxs: merge copy&pasted CLI helper code
Clean up usage of issueNextTransactionNum.

Problem: issueNextTransactionNum took a nym and bSaveTheNumber as
parameters. The nym is used only if bSaveTheNumber is true. This case is
a legacy case from the time where the notary assigned tx nums to nyms
without requiring them to sign for them. For the normal case, no nym is
required, but one is passed on every call anyway.
Two instances of an invocation with bSaveTheNumber=true remain, which
need a closer look. This commit cleans up the signature and invocations
of that function, and introduces a new function
`issueNextTransactionNumberToNym` to handle the two odd cases.
In UserCmdGetTransactionNumbers, delete code that removes tx nums from
the nym.

Reason: they were never added in the first place.
Use issueNextTransactionNumber in issueNextTransactionNumberToNym.
OT_ME: remove unused functions
Merge pull request #477 from benma/txnums

Clean up usage of issueNextTransactionNum.
Merge pull request #478 from toxeus/removeUnused

OT_ME: remove unused functions
add function FormatAmountWithoutSymbol
check GetHomeFromSystem output string