[FIX] fix add gateway form (RT-2773)

fix "Save" button always disabled after "Cancel"
[TEST] e2e: fix login
Merge pull request #1872 from darkdarkdragon/develop-RT-2773

[FIX] fix add gateway form (RT-2773)
Merge pull request #1874 from vhpoet/test/e2e

[TEST] e2e: fix login
[TASK] Trust: Refactor for better code architecture
[TASK] Fund: Move all tx messages to transactionerror.jade file
[TASK] Fund currency: Put generic error message for non tx-related errors
[TASK] Trade: Consolidate tx error messages
Merge pull request #1879 from yongsoo/task/trust

[TASK] Tx error msg: Consolidate them (RT-2679)
[TASK] add link to exit from debug mode (RT-2802)
[TASK] rename debug mode button (RT-2796)

Debug mode button say 'turn on debug mode' rather than pretend
Merge pull request #1883 from darkdarkdragon/develop-RT-2796

[TASK] rename debug mode button (RT-2796)
Merge pull request #1882 from darkdarkdragon/develop-RT-2802

[TASK] add link to exit from debug mode (RT-2802)
[TASK] disable funding pages in debug (RT-2811)
[TASK] Change historyApi url
Merge pull request #1885 from vhpoet/fix/config

[TASK] Change historyApi url
Merge pull request #1884 from darkdarkdragon/develop-RT-2811

[TASK] disable funding pages in debug (RT-2811)
[TASK] debug message to standard color (RT-2798)

change debug mode message to standard warning css class
[FEATURE] grunt lesslint
[FIX] CSS cleanup