Don't clean plugins/ folder or config files

Also, if any non-shipped .htaccess files exist, don't clean those either

Fixes #60
Remove placeholder text if found in the draft save

The issue has been filed with Imperavi, but no ticket number or other
tracking information was returned.
Update release notes for v1.7.3

And freshen up the upgrading guide
Merge pull request #63 from greezybacon/issue/redactor-placeholder-in-draft

Remove placeholder text if found in the draft save

Reviewed-By: Peter Rotich <peter@osticket.com>
Fix parsing issue in strtotime()

PHP can't discern the difference between d/m/Y and m/d/Y when just the date
is submitted to strtotime(). Unfortunately, strptime() is not available
until PHP 5.1.0. This patch forces datepickers to change their values to
YYYY-MM-DD upon submission to disambiguate parsing issues.

Fixes #832
Merge pull request #833 from greezybacon/issue/datepicket-date-format

Fix parsing issue in strtotime()

Reviewed-By: Peter Rotich <peter@osticket.com>
Fixup templates to work with Redactor in linebreak mode
Fix oops in htmLawd callback for HTML cleanup
Fix oops in upgrade of %help_topic table

formset_id was not renamed to form_id after our rebase
Await draft deletion before refreshing the page

If the [reset] button refreshes the page, ensure the draft deletion is
completed before the refresh is performed or the draft deletion will be
canceled.
Merge pull request #72 from greezybacon/issue/templates-in-linebreak-mode

Fixup templates to work with Redactor in line break mode

Reviewed-By: Peter Rotich <peter@osticket.com>
Merge pull request #71 from greezybacon/issue/htmlawed-callback

Fix oops in htmLawd callback for HTML cleanup

Reviewed-By: Peter Rotich <peter@osticket.com>
Merge pull request #70 from greezybacon/issue/upgrade-helptopic-form_id

Fix oops in upgrade of %help_topic table

Reviewed-By: Peter Rotich <peter@osticket.com>
Merge pull request #69 from greezybacon/issue/draft-delete-timing

Await draft deletion before refreshing the page 

Reviewed-By: Peter Rotich <peter@osticket.com>
Merge remote branch 'upstream/develop' into develop
Allow embedding videos via <iframes>

Also ensure that the ticket thread is displayed in a <div> container as some
browsers seems to frown upon <iframe>s in <td> elements

Fixes #75
Freshen up WHATSNEW and README documents
Better decision on HTML email

If the HTML ticket thread is enabled and the message is not explicitly
declared to be text, then assume it is an HTML message.
Merge pull request #76 from greezybacon/issue/video-embedding

Allow embedding videos via <iframes>

Reviewed-By: Peter Rotich <peter@osticket.com>
Fix date formatting on due date (again)

Fixes #834 (again)