PDI-7243/PDI-11183 - JSON Output Step throws NullPointerException when previewing no rows

PDI-11183 - fixed
PDI-7243 - patch applyed, junit tests
PDI-11183 - junit tests added
PDI-8395 - JSON Output step only outputs last line of transformation if
append is not checked.

junit tests added
PDI-8395 - JSON Output step only outputs last line of transformation if
append is not checked.

fix added
PDI-7243 - JSON Output Step throws NullPointerException when previewing
no rows

Fix patch to be compatible with old behaviour
Checkstyle for junit test, System.out removed
Remove dependancy on reporting packages

Remove unnecessary dependancy, null aware String comparsion can be done
easily.
modified:   engine/src/org/pentaho/di/job/entries/getpop/MailConnectionMeta.java
[PDI-10094] Fix logging for Teradata fastload
PDI-10909 - Email message input: retrive the first ... emails

junit tests added
PDI-10909 - Email message input: retrive the first ... emails

Fix added. 
Retrieve first ... emails will be applied only if folder is non dynamic
Limit value overrides retrieve first ... emails value
[PDI-10774] Load file content in memory step: Wildcard not preserved after save
PDI-7426 - [PATCH] Subfolders for IMAP for Jobentry 'Get mails' and Transformation Step 'Email messages input'

junit tests added

new file:   engine/test-src/org/pentaho/di/job/entries/getpop/MailConnectionTest.java
PDI-7426 - [PATCH] Subfolders for IMAP for Jobentry 'Get mails' and transformation Step 'Email messages input'

patch applyed
PDI-11232 - "Synchronize after merge": incorrect title of the step
properties dlg window.
Checkstyle task
PDI-11308 - Adding plumbing necessary to register job entry plugin types using RegistryPlugins
Merge pull request #275 from brosander/PDI-11308

PDI-11308 - Adding plumbing necessary to register job entry plugin types...
Merge pull request #268 from pavel-sakun/add-checkstyle-task

Checkstyle task
Merge pull request #200 from prakapenka/PDI-7243

PDI-7243, PDI-11183, PDI-8395  - cummulative fix for JsonOutput step.
Fix issues with checkstyle task
Merge pull request #277 from pavel-sakun/add-checkstyle-task

Fix issues with checkstyle task
PDI-11308 - Allowing specification of username/password in slave server xml