You can only change the oritentation of a JPEG

TIFFs also have EXIF headers, but they're not supported by the Image class

PHP doc
http://php.net/manual/en/function.exif-read-data.php
Allow read-only configuration

Workaround required for IIS setups running ownCloud to prevent dataloss.

Long-term solution would be to move some configuration settings to the database
Depcrate namespaced functions, since they can not be autoloaded
Check if files are deletable before trying to delete them
Dont show the delete button for selected files if one of the selected files is not deletable
Add js unit test
Make MappedLocal::isLocal() true like for Local

Missed in 788c8540aa6aac50795c37b088eeaa561d44b86c
Check file existance in MappedLocal in hasUpdated()

Only fixed in Local by eeee9eacea333035e22ef3ed938e36f56bc762cd
Check return of disk_free_space before returning it

Local changes copied from ed8359737199a8a6640986e00df80d971aa6e1d7
and 25370fcb8235d2129cab0f8a5843c4784b3673d0
Check whether file exists before trying to touch() it

Local changes from d069ee8a8bce6a08d8b7921ad378c60af2a0439e
and 258ad38fd3c1e3cdc4ec20238b166e78c334b814
Also clearstatcache() in MappedLocal before using the stats

Local change 283c10f010f5da4ca0b6b7658ac1fa730b8858bf
remove border from user menu, adjust to apps menu
add activity priorities to core so that other apps can reuse it
Merge pull request #12486 from owncloud/activity_priorities

add activity priorities to core so that other apps can reuse it
concatenate queries with 'or'
Disable MSSQL for new CE installations

Since automatic schema migrations are not yet possible let's disable this for now.
Disable OCI as it is unsupported by most CE apps
Adjust sample config
Merge pull request #12488 from owncloud/activity_group_multiple_conditions

activitymanager: concatenate queries with 'or'
Merge pull request #12499 from owncloud/disableMSSQL

Disable MSSQL and OCI for new CE installations