- Added translations to global search.

Changed the UI for the DNS SRV records to help the user (instead of giving him 1 field which have to have 3 texts, now there are 3 fields which will be concated for the database and splitted for the user).

data --> weight port target

Merged revisions 3049-3051,3053-3054,3058,3070,3074-3077,3082,3086-3088,3091-3092,3094-3095 from stable branch.

Fixed: FS#2109 - Email address validation via API method(s) is inadequate (and results in false-negatives)

- Improved datalog functions.

- Make sure the apps vhost gets configured no matter if the ISPConfig interface is installed or not.

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- Make sure no image is displayed for the billing module in the navigation if the default_no_navimg theme is selected.

- Introduced subsections for forms. With subsections, you can split up large forms. Subsections can be slid into/out of view.

- Fastcgi: delete .php-fcgi-starter directory if another PHP mode is used.

Extended datalogUpdate and datalogInsert function in mysql library so that insert_data and update_data arguments can be passed as array too.

- nginx: merge function: default action is now to replace older locations in the nginx vhost configuration; a merge  instead of a replacement can be achieved by putting the string "##merge##" (without quotes) at the end of the most recent location line (e.g. "location ~ \.php$ { ##merge##").