Setting 'archiving_ranking_query_row_limit' to 0 (no limit) should disable RankingQuery #3482

Setting
'archiving_ranking_query_row_limit' to 0 (no limit) causes archiving
process not to process Actions and display an error.

The following errors shows up during archiving:

 Notice:</strong> <i>Undefined index: type</i> in
 <b>/home/ehealth/public_html/piwik/plugins/Actions/ArchivingHelper.php</b>
 on line <b>49</b>
 <br /><br />Backtrace --&gt;<div style="font-family:Courier;font-
 size:10pt"><br />
 <a href='/0'>#0</a>  Piwik_ErrorHandler(...) called at
 [/home/ehealth/public_html/piwik/plugins/Actions/ArchivingHelper.php:49]<br
 />
 <a href='/1'>#1</a>  Piwik_Actions_ArchivingHelper::updateActionsTableWithRowQuery(...)
 called at
 [/home/ehealth/public_html/piwik/plugins/Actions/Archiving.php:478]<br />
 <a href='/2'>#2</a>  Piwik_Actions_Archiving-&gt;archiveDayQueryProcess(...) called at
 [/home/ehealth/public_html/piwik/plugins/Actions/Archiving.php:282]<br />
 <a href='/3'>#3</a>  Piwik_Actions_Archiving-&gt;archiveDayActionsTime(...) called at
 [/home/ehealth/public_html/piwik/plugins/Actions/Archiving.php:100]<br />
 <a href='/4'>#4</a>  Piwik_Actions_Archiving-&gt;archiveDay(...) called at
 [/home/ehealth/public_html/piwik/plugins/Actions/Actions.php:592
 ...

var_dump'ing $row at plugins/Actions/ArchivingHelper.php:36, shows:

 array(6) {
   ["idaction"]=>
   string(7) "1792657"
   [17]=>
   string(1) "1"
   [19]=>
   string(1) "1"
   [20]=>
   string(1) "3"
   [21]=>
   string(3) "279"
   [22]=>
   string(1) "0"
 }

so we have a problem with translation of keys in the row.

Proposal

• when archiving_ranking_query_row_limit == 0, throw an exception (ask user to increase value in config file)
• in the code, remove the code that tests for RQ and always use it in Actions+Transitions plugins (where it is currently used)
  • the feature "disable ranking query" is actually not a feature of Piwik, so let's remove it.

To record more or all data, set this number to very high limit ie. 100000 or 1 million.

In 4b4277b3acab454b69ded4557deba3271ff93b9b: Fixes #3482, apply quick fix so Piwik works when ranking query is disabled and added test for disabled ranking query. Added FIXME comment to make sure underlying issue is eventually dealt with.