added unit tests for node handlers
addressed issue https://github.com/globaleaks/GlobaLeaks/issues/945
applied minor fixes suggested by @mmaker
added data dumper util in order to debug globaleaks data structures
Upgrade requirement `cryptography` to 0.5.
added import for localized templates from glclient appdata
addressed issue https://github.com/globaleaks/GlobaLeaks/issues/926
fixed a bug related to a bad merge
implemented support for https://github.com/globaleaks/GlobaLeaks/issues/949
x_frame_options now accepts confiogurations only for deny and allow-from modes
removed unmaintained mysql.sql
fixed some unit tests
implemented backend support for https://github.com/globaleaks/GlobaLeaks/issues/953 and https://github.com/globaleaks/GlobaLeaks/issues/936
added db for testing of further migrations starting from version 14
added unit tests for node handlers
added unit tests for admstaticfiles handlers
added unit tests for receiver handlers
fixed test_node UT
added unit tests for admlangfiles handlers
added unit tests for submission handlers