german translations
[Jobs,Core] List filter form for jobs list.

* todo: Generalize usage of filte form to reuse in other modules.
[Jobs,Core] Cleanup filter form and add loading overlay
[Jobs] Adds translations
[Jobs] Fix: List-Filter: Radiobutton labels were not translated.
[Core] upgrades bootstrap to 3.0.3.

- use selection box for language settings
[Applications] adds help texts to the setting forms
[Applications] translate help texts
Merge branch 'feature/help-texts' into develop
[Jobs] modifies job search form to use bootstrap 3
[Auth] Adds new role "recruiter", Adds new formular elements in profile.

* Logged in users can now change their role to role names defined in
  "public_roles"-key in module.config.php under "acl" via the profile formular.

* Adds translations of role names and some formular elements.
- fixed modal boxes
- moved application history into a modal box
[Applications] ads additional columns to the application overview
[Applications] Fixed: CvMapper does not load educations, employments and skills from RelationEntities
[Core] don't set Sender in Mailheader
[Jobs,Auth] Makes list filter acl role aware. Fixed some bootstrap convertion errors.

[Core] fixed loading popup (bootstrap 3 issue)
* removes view helper FormatDate. Use DateFormat instead
* sets state "success" when saving settings
* removed options "inputWidth" und "labelWidth". Use core bootstrap feature instead
* german translations
[Auth,Core,Applications] fixed: Uploading user image throws exceptions.

closes #1
* hide career, attachments and job on snall devices
* don't use form-control for submit or reset buttons
* moved some bootstrap class names into the cam.less