JS/CSS Versioning support

Check the filemtime of the css/js file to prevent browser caching of
these assets
Add link to zip download

Adding the complementary part to mkly's changes, making it more friendly for newcomers to know how to get the latest development build without having to know how to navigate GitHub.
Enhanced the image helper to allow for instance-specific JPEG compression level

I felt there was a need for the image helper to occasionally render
very high quality JPEGs (my usage was a zoomable map), and there was no
functionality to do this on a per-image / -block basis. Should be a
fairly straight-forward upgrade.
Enhanced the image helper to allow for instance-specific JPEG compression level

I felt there was a need for the image helper to occasionally render
very high quality JPEGs (my usage was a zoomable map), and there was no
functionality to do this on a per-image / -block basis. Should be a
fairly straight-forward upgrade.
Structural updates based on best practices and feedback

# Renamed the compression property to jpegCompression to be more
consistent. also set default value to default system value
# moved constructor to the reset() method which is automatically
invoked by Loader::helper
 # returned $this on setJpegCompression method to allow for chaining
(e.g.
Loader::helper('image')->setJpegCompression(20)->getThumbnail($file,
200, 100);
# modified min level to be 0 per imageJPEG method's acceptable range
Structural updates based on best practices and feedback

# Renamed the compression property to jpegCompression to be more
consistent. also set default value to default system value
# moved constructor to the reset() method which is automatically
invoked by Loader::helper
# returned $this on setJpegCompression method to allow for chaining
(e.g.
Loader::helper('image')->setJpegCompression(20)->getThumbnail($file,200,
 100);
# modified min level to be 0 per imageJPEG method's acceptable range
replace t() with DateHelper

Translation of strings inside dates (monthnames, daynames) should be handled through the DateHelper instead of t().
http://docs.mnkras.com/class_concrete5___helper___date.html#a5f7a7453c70e203543e5e0ab057e3ae5
Use DATE_APP_GENERIC_T instead of literal
display recent page breadcrumbs in reverse-chrono order; change breadcrumb divider from slash to pipe (to avoid confusion with page paths); tweak spacing between breadcrumb items
Remove hardocded textarea width from form block output
Fix documentation on Area::setCustomTemplate() method

The docs were giving the wrong example for how to pass in a custom template name (it should be 'templates/file_name.php', not just the template handle as was previously being indicated).
Also refactored the variable name from $temp to $view, so it matches the Block::display() method arg (thus giving another indication that you should pass in the relative path to the custom template file, and not just the handle).
Added file description to data returned by the files/get_data tool
Update web/concrete/core/controllers/single_pages/dashboard/system/backup_restore/backup.php

Tidies up the listing so that backup will ignore files that do not match the created backup pattern of including a timestamp in the filename. Other files/directories in the backup folder will now be ignored by the backup listing.
check for datatype in select function

as mentioned here: http://www.concrete5.org/index.php?cID=403092&editmode=

the following code would create two selected options:

´´´
$fh = Loader::helper('form');

echo $fh->select(
    'test', 
    array(
        '5' => '5', 
        '5-4' => '5-4'
        ), 
    5);
´´´
Update web/concrete/core/helpers/form.php
Update web/concrete/core/helpers/form.php
set fixed height in slideshow block
determine max height of slideshow images
constant to hide concrete5 version number

as mentioned here http://www.concrete5.org/community/forums/chat/visible-version-number-in-source-code/
don't output unnecessary jquery UI in form block

Take 2 (see https://github.com/concrete5/concrete5/pull/672 for prior discussion).
Also outputs CSS to header (not footer) if needed.