fixed an issue where running mvn package without clean would break the usemin step of the grunt build
DS-2120: IdentifierServiceImpl should log less aggressive

The IdentifierProvider API uses exceptions to state that an Identifier
for a specific DSO cannot be found. These exceptions shoudln't get
logged as error.
Merge pull request #623 from tuub/DS-2120

DS-2120: IdentifierServiceImpl should log less aggressive
Merge pull request #618 from atmire/mirage2-usemin-issue

[DS-2116] Mirage 2 build fails without including maven clean target
DS-2120: Reduce logging in IdenitifierServiceImpl.resolve(...).
Merge pull request #624 from tuub/DS-2120

DS-2120: Reduce logging in IdenitifierServiceImpl.resolve(...).
[DS-2126] changed invalid datatype of TEXT to VARCHAR2(2000), dropped transaction/commit block
Merge pull request #625 from hardyoyo/DS-2126-tweak-oracle-scripts

[DS-2126] changed invalid datatype of TEXT dropped transaction