Added new functions to DynaformExecution.java

Added functions nextStepLink(), nextStepLinkWithMessage(), previousStepLink(), btnAceptar(), btnCancelar(), gridCountRows() and gridDeleteRows into DynaformExecution.java file.
Merge remote-tracking branch 'upstream/master' into FunctionsAdded
Update files CronExecute.java and DynaformExecution.java

Update names of functions in DynaformExecution.java and update the functionality of cron.php script
Merge pull request #151 from ernestvegap/ModificationsFunctions

Update CronExecute.java and DynaformExecution.java