Protect attachments against concurrent edition of a ticket.

git-svn-id: http://svn.code.sf.net/p/itop/code/trunk@3221 a333f486-631f-4898-b8df-5754b55c2be0
#916 Hierarchical selector: clicking on the label now has the same effect as clicking on the radio button itself. (The label is no longer an hyperlink)

git-svn-id: http://svn.code.sf.net/p/itop/code/trunk@3222 a333f486-631f-4898-b8df-5754b55c2be0
#892 Refresh the "multi-select" when picking a value with the "hierarchical picker", inside a search form.

git-svn-id: http://svn.code.sf.net/p/itop/code/trunk@3223 a333f486-631f-4898-b8df-5754b55c2be0
#951 Properly display localized values for ENUMs in the data model view.

git-svn-id: http://svn.code.sf.net/p/itop/code/trunk@3224 a333f486-631f-4898-b8df-5754b55c2be0
#949 Upgraded SwiftMailer to the latest version (5.2.1)

git-svn-id: http://svn.code.sf.net/p/itop/code/trunk@3225 a333f486-631f-4898-b8df-5754b55c2be0
Applied again the patch [r3025] to support an empty TO: header when using the PHP Mail transport.

git-svn-id: http://svn.code.sf.net/p/itop/code/trunk@3226 a333f486-631f-4898-b8df-5754b55c2be0
#948 Finalization of the full text accelerators: two new parameters: 'skip' and 'enable_enlarge'. 'attributes' is now an optional parameter.

git-svn-id: http://svn.code.sf.net/p/itop/code/trunk@3227 a333f486-631f-4898-b8df-5754b55c2be0
#940 "Close" and "Reopen" buttons were not working on IE (due to extra commas at the end of JS lists)

git-svn-id: http://svn.code.sf.net/p/itop/code/trunk@3228 a333f486-631f-4898-b8df-5754b55c2be0
#906 Better way to handle the lock in order to prevent duplicates in the numbering of Tickets. Note that the iTopMutex now supports re-entrancy inside the same PHP page.

git-svn-id: http://svn.code.sf.net/p/itop/code/trunk@3230 a333f486-631f-4898-b8df-5754b55c2be0