updating plugin.xml to declare the content-generator and meta-provider properly according to the 3.5 syntax
updating plugin.xml to declare the content-generator and meta-provider properly according to the 3.5 syntax

davidmsantos90/cdf,dcleao/cdf,plagoa/cdf,davidmsantos90/cdf,webdetails/cdf,Aliaksandr-Kastenka/cdf,diogofscmariano/cdf,Aliaksandr-Kastenka/cdf,eliofreitas/cdf,scottyaslan/cdf,plagoa/cdf,Tiger66639/cdf,afrjorge/cdf,webdetails/cdf,e-cuellar/cdf,Aliaksandr-Kastenka/cdf,gcnonato/cdf,pamval/cdf,afrjorge/cdf,dcleao/cdf,jvelasques/cdf,carlosrusso/cdf,bytekast/cdf,gcnonato/cdf,e-cuellar/cdf,krivera-pentaho/cdf,miguelleite/cdf,Tiger66639/cdf,plagoa/cdf,diogofscmariano/cdf,davidmsantos90/cdf,pamval/cdf,krivera-pentaho/cdf,akhayrutdinov/cdf,pedrofvteixeira/cdf,jvelasques/cdf,pedrofvteixeira/cdf,carlosrusso/cdf,gcnonato/cdf,bytekast/cdf,dcleao/cdf,carlosrusso/cdf,afrjorge/cdf,scottyaslan/cdf,eliofreitas/cdf,miguelleite/cdf,webdetails/cdf,scottyaslan/cdf,pamval/cdf,bytekast/cdf,pedrofvteixeira/cdf,Tiger66639/cdf,eliofreitas/cdf,akhayrutdinov/cdf,jvelasques/cdf,krivera-pentaho/cdf,diogofscmariano/cdf,e-cuellar/cdf,akhayrutdinov/cdf,miguelleite/cdf