[FIX] Trade URI handling fix

in trade pair deep link:
check for empty issuer
remove global variables
[TASK] Allow cancel orders individually (RT-2958)

Allow user to individually cancel orders without
having to wait for the transaction to finish
[TASK] Hide edit button (RT-2958)

Hide edit button while cancelling order
[TASK] btc2ripple: Add success and failure messages (RT-2988)
[TASK] Exchange: Update gateway connect help url (RT-2974)
[TEST] e2e tests for My Orders (RT-2613)
[TASK] Trade: tooltip for back icon (RT-2835)
[TASK] show loading spinner when loading new orderbook [RT-2812]
[FIX] Fix mistypes that cause exceptions
Merge pull request #2028 from vhpoet/develop

[FIX] Fix mistypes that cause exceptions
Merge pull request #2027 from Mesrop/develop-RT-2835-22-12

[TASK] Trade: tooltip for back icon (RT-2835)
Merge pull request #2023 from rht/rt-2974

[TASK] Exchange: Update gateway connect help url (RT-2974)
[TASK] My Orders change label font (RT-2949)

My Orders: Change label font in transposed view to OpenSansSemibold
[TASK] Refactorings based on the angular-styleguide

More is coming.
Merge pull request #2021 from yongsoo/task/btc2ripple

[TASK] btc2ripple: Add success and failure messages (RT-2988)
[TASK] Remove drag from top to mobile scrolling (RT-2923)
[TASK] Landing page: no underline for links (RT-2713)
Merge pull request #2033 from Mesrop/develop-RT-2713-23-12

[TASK] Landing page: no underline for links (RT-2713)
Merge pull request #2032 from Mesrop/develop-RT-2923-23-12

[TASK] Remove drag from top to mobile scrolling (RT-2923)
Merge pull request #2031 from vhpoet/develop

[TASK] Refactorings based on the angular-styleguide