Email validation: new regex (more flexible)
Internal storage: problem with special charachters fixed
fix https://github.com/imeji-community/imeji/issues/219
fix: 231 and 229
fix 230
Internal storage: filename stored with their checksum
fix 240
fix 236
link indention
Merge branch 'develop' of https://github.com/imeji-community/imeji into develop
Fix for: https://github.com/imeji-community/imeji/issues/221
Improved asmin user page
fix 235
fix 220
Some fixes

https://github.com/imeji-community/imeji/issues/200
https://github.com/imeji-community/imeji/issues/249
https://github.com/imeji-community/imeji/issues/242
Merge branch 'develop' of https://github.com/imeji-community/imeji into develop
fix 255
images not rendered after log out fix
BeanHelper method unsynchronized
BeanHelper: avoid synchronized on null object