fixes #4432 Disable Add-file button on Legacy Files portlet
#4488
#4409
#4496 oracle fix
Merge pull request #4497 from dotCMS/issue-4496-oracle-reindex-hang

#4496 oracle fix
#4493
Merge pull request #4495 from dotCMS/issue-4409-export-content-respect-filter

#4409
#4488 updated com.dotcms.hooks example
#4488 updated com.dotcms.job example
#4488 updated com.dotcms.job override
#4488 updated docs
#4152
Merge pull request #4498 from dotCMS/issue-4152-upload-files-window-size-field-space

#4152
small change for junit testing h2
Merge branch 'master' of https://github.com/dotCMS/dotCMS
h2 drop fix
fixes #4476 Impossible see the assigned-to filters
fixes #4456
#4488 updated com.dotcms.service example
#4488 updated com.dotcms.servlet example