[Qt] add all used colors in txtablemodel to guiconstants

- add colors used in TX status decoration
[Qt] simplify return code and return values in txtablemodel

- also move an added space in a string where it belongs
Remove unused function main:VerifySignature
Remove CScriptCheck::nHashType (was always 0)
Don't pass nHashType to VerifyScript
Don't pass nHashType to EvalScript nor CheckSig
update rpc help message for gettransaction to add includeWatchonly param
fix missing gettransaction entries in rpcclient
Move CTxDestination from script/script to script/standard
Merge pull request #4899

0be990b Move CTxDestination from script/script to script/standard (Pieter Wuille)
Merge pull request #4863

1a61396 fix missing gettransaction entries in rpcclient (Benedict Chan)
57e1716 update rpc help message for gettransaction to add includeWatchonly param (Benedict Chan)
Merge pull request #4555

6dcfda2 Don't pass nHashType to EvalScript nor CheckSig (jtimon)
2b23a87 Don't pass nHashType to VerifyScript (jtimon)
ce3649fb Remove CScriptCheck::nHashType (was always 0) (jtimon)
358562b Remove unused function main:VerifySignature (jtimon)
typo fix of booleamn to boolean
prefer const string& over char* in CDB and CWalletDB constructor

- also make parameter of CDBEnv::CheckpointLSN a constant reference
cleanup class private and public areas in walletdb

- only code movement
Merge pull request #4931

93f84d0 cleanup class private and public areas in walletdb (Philip Kaufmann)
22d7e70 prefer const string& over char* in CDB and CWalletDB constructor (Philip Kaufmann)
Merge pull request #4936

c15e483 typo fix of booleamn to boolean (imharrywu)
Remove mention of MacPorts from OSX build docs
Merge pull request #4939

d547ebf Remove mention of MacPorts from OSX build docs (Wladimir J. van der Laan)
Merge pull request #4667

bbad683 [Qt] simplify return code and return values in txtablemodel (Philip Kaufmann)
21f1516 [Qt] add all used colors in txtablemodel to guiconstants (Philip Kaufmann)