Coder cleanup suggestions (minor formatting)

Coder suggested some simple formatting changes. I am doing the clean-up and will upload my patch here.

Here are the suggestions from coder:

Line 144: Use "elseif" in place of "else if" [style_elseif]
else if (function_exists($data['hook theme'])) {
severity: normalreview: style_elseif

Line 222: Use "elseif" in place of "else if" [style_elseif]
else if (function_exists($data['hook menu'])) {
severity: normalreview: i18n_0

Line 273: The $text argument to l() should be enclosed within t() so that it is translatable. [i18n_0]
'description' => t("Allows a user to access the !link.", array('!link' => l('Panels Dashboard', 'admin/structure/panels'))),
severity: normalreview: style_string_spacing

Line 1041: String concatenation should be formatted with a space separating the operators (dot .) and the surrounding terms [style_string_spacing]
$output .= "$prefix " . '$display->panels[\'' . $pane->panel . '\'][' . $region_counters[$pane->panel]++ .'] = \'' . $pane->pid . "';\n";
severity: normalreview: style_uppercase_constants

Line 1162: Use uppercase for PHP constants, e.g. NULL, TRUE, FALSE [style_uppercase_constants]
$image = l(theme('image', array('path' => $file)), $link, array('html' => true) + $options);
severity: normalreview: style_control_spacing

Line 1233: Control statements should have one space between the control keyword and opening parenthesis [style_control_spacing]
if(!empty($element['#links'])) {
severity: normalreview: style_string_spacing

Line 1260: String concatenation should be formatted with a space separating the operators (dot .) and the surrounding terms [style_string_spacing]
$type_class = $content->type ? 'pane-'. ctools_cleanstring($content->type, array('lower case' => TRUE)) : '';
severity: normalreview: style_string_spacing

Line 1261: String concatenation should be formatted with a space separating the operators (dot .) and the surrounding terms [style_string_spacing]
$subtype_class = $content->subtype ? 'pane-'. ctools_cleanstring($content->subtype, array('lower case' => TRUE)) : '';