Fix OutOfMemory bug by releasing writeAppender after importing template

The statement logger.removeAppender( logName ) will not remove writeAppender. The result is that the BI server will hold a lot of unused writeAppender, which will eventually lead to OutOfMemory situation after importing a large number of templates.
BACKLOG-774 - Uncomment old \ ignored unit tests (re-fix ExporterTest)
[TEST] jUnits refactoring and fixes
Merge pull request #2111 from AliaksandrDrebenchuk/jUnits

[TEST] jUnits
Merge pull request #2109 from Aliaksandr-Kastenka/BACKLOG-774

BACKLOG-774 - Uncomment old \ ignored unit tests (re-fix ExporterTest)
[TEST] RuntimeObjectFactoryTest fixed
Merge pull request #2113 from AliaksandrDrebenchuk/jUnits

[TEST] jUnitTests fixed
[TEST] core/test-src/org/pentaho/test/platform/engine/core/BaseTest.tearDown() change was reverted
Merge pull request #2114 from AliaksandrDrebenchuk/jUnits

[TEST] core/test-src/org/pentaho/test/platform/engine/core/BaseTest.tearDown() change was reverted
BISERVER-12041 - REGRESSION: Order of Users and Roles shown in 'Select User or Role' window in PUC are re-ordered non-alphabetically - JDBC Auth and LDAP
Merge pull request #2116 from Aliaksandr-Kastenka/BISERVER-12041

BISERVER-12041 - REGRESSION: Order of Users and Roles shown in 'Select U...
PDB-1476 - fix checkstyle
PDB-1476 - Invalid SQL when calling a parameter as a non-admin user
Fixed error "- Could not render dashboard" with reason java.io.FileNotFoundException: Repository file /public/dasboard/11.xdash/11.xdash not readable or does not exist
Merge pull request #2120 from annapopova1/PDB-1476

PDB-1476 - Invalid SQL when calling a parameter as a non-admin user
[PDI-12301] - Encoding/Decoding - Not able to edit or delete a slave server with ':' in the name - added formatting for changed classes
[PDI-12301] - Encoding/Decoding - Not able to edit or delete a slave server with ':' in the name - added fix and corrected unit test
Merge pull request #2121 from MikhailGorbachev/PDI-12301

PDI-12301 - Encoding/Decoding - Not able to edit or delete a slave server with ':' in the name
Merge pull request #2047 from minhhai2209/master

Fix OutOfMemory bug by releasing writeAppender after importing template