changed schema
Merge branch 'develop-ja' of https://github.com/tkowark/hpi-hiwi-portal into develop-ja
 added plpgsql extension to schema.rb
Merge branch 'develop-ja' of https://github.com/tkowark/hpi-hiwi-portal into develop-ja
Merge branch 'develop-ja' of https://github.com/tkowark/hpi-hiwi-portal into develop-ja
added a sample job offer
Merge branch 'develop-ja' of https://github.com/tkowark/hpi-hiwi-portal into develop-ja
changed the database schema so that a job_offer has_many programming languages and a programming language belongs_to a job offer
created an example job offer into the seeds
added migration for the job offer has many programming languages relation
added migration to delete obsolete join table joboffers_programming_languages_join
fixed layout for only one job offer
Merge branch 'develop-ja-overview' of https://github.com/tkowark/hpi-hiwi-portal into filter-job-offers