directoy checks for windows
old code, posible vulnerability
contact attachement fix, php files are not allowed
alerts sql injection fix
trim alert
version update, change load, fixed installation
Merge pull request #1735 from osclass/fix-contact

contact attachement fix, php files are not allowed
Merge pull request #1734 from conejoninja/fixes

Fixes
uncomment
Merge pull request #1736 from conejoninja/fixes

uncomment
fixes
Merge pull request #1737 from conejoninja/fixes

fixes
bug fixed, removed attachements after send email
Merge branch 'fix-contact' into hotfixes
Merge branch 'hotfixes' of github.com:osclass/Osclass into hotfixes
fix race condition on uploaded file
Merge pull request #1740 from conejoninja/move_uploaded

fix race condition on uploaded file
removed OSC_CRYPT_KEY, added alert public and private key to session, added alert signature validation on server side, minor improvements
fixed issue on contact page, without attachements always return error
fix notice on phpseclib, The plaintext's length (XX) is not a multiple of the block size (32), minor fixes