Coder Module Review [#170205]

Fix reCAPTCHA to get 100% with the Coder module review.

...

recaptcha.module

Line 20: string concatenation should be formatted without a space separating the operators (dot .) and a quote
```
      $output .= '<p>' .
```
Line 22: string concatenation should be formatted without a space separating the operators (dot .) and a quote
```
        '</p><h3>' .
```
Line 24: string concatenation should be formatted without a space separating the operators (dot .) and a quote
```
        '</h3><p>' .
```
Line 118: Functions should be called with no spaces between the function name
```
function recaptcha_admin_settings_validate ($form_id, $form_values) {
```
Line 131: Control statements should have one space between the control keyword and opening parenthesis
```
  switch($op) {
```
Line 138: Control statements should have one space between the control keyword and opening parenthesis
```
      if($captcha_type == "reCAPTCHA") {
```
Line 140: global variables should start with a single underscore followed by the module and another underscore
```
        global $jsadded;
```
Line 157: string concatenation should be formatted without a space separating the operators (dot .) and a quote
```
        drupal_add_css(drupal_get_path('module', 'recaptcha') . '/recaptcha.css');
```
Line 168: Functions should be called with no spaces between the function name
```
        $result['form']['captcha_challenge'] = array (
```
Line 186: else statements should begin on a new line
```
      } else {
```