Updated .gitignore to include backup files

Signed-off-by: Rafael Manzo <rr.manzo@gmail.com>
Handled errors for preparer step on runner

Signed-off-by: Rafael Manzo <rr.manzo@gmail.com>
Handled errors for downloader step on runner

Signed-off-by: Rafael Manzo <rr.manzo@gmail.com>
Handled error for compound result calculate stop on runner

Error handling test is pending.

Signed-off-by: Rafael Manzo <rr.manzo@gmail.com>
Made tests more specifics

Signed off by: Diego Araújo <diegoamc90@gmail.com>
Handling CompoundResultCalculator's possible exception.

Signed off by Diego Araújo <diegoamc90@gmail.com>
Created error message column on processing table

Signed off by: Diego Araújo <diegoamc90@gmail.com>
Saving error messages on database

Signed off by: Diego Araújo <diegoamc90@gmail.com>
Action for processing error message

Signed off by: Diego Araújo <diegoamc90@gmail.com>
Started acceptance tests for processing error retrieval

Signed off by: Diego Araújo <diegoamc90@gmail.com>
Fixed processing error acceptance tests

Signed off by: Diego Araújo <diegoamc90@gmail.com>
Solved rebase conflicts

Signed off by: Diego Araújo <diegoamc90@gmail.com>
Signed off by: Alessandro Palmeira <alessandro.palmeira@gmail.com>
Signed-off-by: Daniel Alves <danpaulalves@gmail.com>
Merge pull request #29 from mezuro/handle_processing_errors

Handle processing errors