Add canned attachments to allowed files list when a canned response is used.

Textarea input cleanup

Make Avatars optional on thread view

Add a global option to disable avatars on thread correspondence . Agent's
and user's profiles will still show an avatars.

Agent's preferences

Add a preference option to set the sort order of the thread entries in DESC or
ASC order.

 * System Default order is ASC
 * Auto-scroll is disabled when sort order is set to DESC.

Add preference to agent's profile to enable relative time use.

Support using global config table to store agent's preference.

Move setting from Setting > Tickets to Settings > Agents

Enable the ability to show the agent's full name or department's name on
responses/replies in addition to the emails address name. Email address of
the response would still be designated outgoing email address of the
Department to which the ticket is assigned or the system default outgoing
email address.

* Agents can set the default FROM Name in Profile > Preference.
* Private department's name won't be used regardless of the setting.
* Agent's name won't be used if identity masking is enabled.

Flag SYSTEM thread entries

bug: In-Reply-To and References headers

bug: CSV User import

bug: Agents Signature & Timezone dropped on update

Misc. bugfixes for v1.10

Assignment + Claim revisited

Make fulltext search optional on user lookup

Let textarea widgets parse and clean input based on configured text format.
Add cleanup routine to ThreadEntryBody
Clean response/note inputs

Filter assignees based on selected tickets department setting.

Make sure the references are valid for the email recipient.

Filter members based on department's assignment restriction when building a
list of assignees.

Implement auto focus and scroll when post reply or note action button is
clicked as well as tab highlight on error
Unpack tickets' mass action buttons - more options retired for now
Translate missed phases

Removed the span, it was unnecessary and gave the Internal Note button
a color to differentiate between Reply and Internal Note.

Moved buttons above with other action buttons and also into sticky
header. Removed titles of buttons and added tooltips. adjusted tooltip
z-index so it won’t be hidden behind dropdowns. added scroll to bottom
function to reply and internal note buttons.

Adds an additional location for the ticket response above the ticket
thread for a reverse order view of the ticket thread. Additionally the
reply/internal note button would be selected and the page would auto
scroll to the bottom.

ClaimForm extends AssignmentForm and hides assignees selection. Claimant is
still given the opportunity to log an optional internal note as to why
they're claiming the ticket in question.

Let the object have full control the list of possible assignees

Action to disable auto-autoresponse doesn't require  any config check.

Count by staff membership

Fix a bug where tickets assigned to ANY team and unassigned to an agent
showed up on My Tickets count.

Fix forms mixup bug that nulled users' name for existing users on CSV import. GUI update worked
as expected only because of the magic $_POST variable.

This is necessary to differentiate true system notes vs. notes made by a
deleted agent or collaborator.

getObject should be used instead.