%identity% - add feature to load additional information from addressbook

[RealRaven2000]

%identity% should be extended to retrieve addressbook info for additional detail, in the same manner as the other address variables (%to%, %from%, %cc% etc). This can be useful for adding address and contact information based on current identity at the bottom of the email. The entry should be resolved via the email address of the identity. To switch on this behavior, use the parameter "addressbook", followed by the desired addressbook fields, e.g.:

%identity(addressbook,name,workphone,work.department)%

[RealRaven2000]

Here is an (already pretty far advanced) test version. I also managed to factor in the beloved [[ optional stuff ]] syntax, which is mind-blowingly difficult seeing that [ and ] are also reserved characters in regular expressions.

Here is an example for a template with this syntax:

<p>Dear %to(name)%</p>
<p>%cursor%</p>
<p>Kind regards<br>
&nbsp;&nbsp; %identity(addressbook,firstname)% <br>
[[%identity(addressbook,work.title)%  <br>]]
[[%identity(addressbook,work.organization)% <br>]]
[[dep: %identity(addressbook,work.department)% <br>]]
[[phone: %identity(addressbook,workphone)%<br>]]
[[private: %identity(addressbook,homephone)%<br>]]
[[other: %identity(addressbook,other.custom1)%<br>]]

So in this example, I assume firstname can always be resolved from my matched AB entries. I also assume that an entry will definitely be found in the AB.

All other lines are "optional" and will be removed if no data is found in that part of the AB card. That means we can use this template by matching it with different contacts and only fill in a line like
phone: 01 -12343 478234 if there is actually any data in the workphone field.

smartTemplate-fx-2.8pre160.zip

[RealRaven2000]

Closing as complete with release 2.8