rename all migrations to 1.x

db/migrations/1.80_skiplinks_enable_configuration.php

db/migrations/1.81_step_209_teilnehmericon.php

db/migrations/1.83_tic1992_privacydefaults.php

db/migrations/1.84_step_226_dozenten_labels.php

db/migrations/1.85_tic2007_schedule_enable.php

db/migrations/1.86_step_228_raumanfragen.php

db/migrations/1.87_tic1091_chat.php

db/migrations/1.88_biest2055_terms.php

db/migrations/1.89_step_00205_group_calendar.php

db/migrations/1.8_step_117_studienmodule.php

db/migrations/1.90_tic2395_smileys.php

db/migrations/1.91_tic2568_comment_internal.php

db/migrations/1.92_remove_schedule_user_table.php

db/migrations/1.93_sem_classes_convert_into_db.php

db/migrations/1.94_step237_datafields_mandatory.php

db/migrations/1.95_extend_userstudiengang_primarykey.php

db/migrations/1.96_step00234_homepageplugin_activation.php

db/migrations/1.97_init_personal_notifications.php

db/migrations/1.98_user_data_to_config.php

db/migrations/1.99_step00245_simpleormap.php