add logout link if the current session has saved user credentials
fixes XForm viewer, closes #504
fixed caching update mechanism for changed media files, closes #398
Merge pull request #505 from modilabs/image_url_caching_fix

Image url caching fix + form xml viewer fix
rebuilt css (logout link added)
small correction for forms without media, #479
edit in form tester
fixes issue when multiple repeat instances are loaded and relevant logic inside the repeats is not properly evaluated (XPath caching issue), closes #507
remove comment
rebuilt
fix for context index error when the relevant condition is bound to the jr-group parent of a jr-repeat, closes #513
rebuilt js and css with latest fixes and bootstrap update
fix for half-hour-timezone bug, closes #1206
remove errors from json returned to drishti, closes #515
rebuilt with fixes for date in half-hour-timezones and removal of errors from Dristhi json format
Kiran | Restructured enketo code inside dristhi folder to make it similar to how it is on dristhi app. Added a new param when creating controller in storage_drishti.js
Merge pull request #525 from kirang20/dristhiCodeReorganise

Restructured enketo code inside dristhi folder to make it similar to one on Dristhi app
updated build file with new dristhi app structure, commented (out/in) some scripts in template.html to it runs from repo.
Merge branch 'master' of https://github.com/modilabs/enketo into deploy