[TASK] Trade: Unsubscribe from orderbook when leaving the trade tab

We don't need to be subscribed to orderbooks while not in trade tab. This is an optimiziation thing.
[TASK] Apps: Remove unneeded dependencies
[FIX] Exchange: Close the pathfind on tab change
[TASK] Remove unused timeout dependency from two controllers
[FEATURE] Register: Welcome message
[TASK] Listen to balancesUpdate instead of watching for lines
[FIX] appManager: Save the app only once
[TASK] Listen to blobUpdate instead of watching for userBlob
[TASK] Get rid of the navbar balance help popover
[FIX] Convert: Use currency hex for payment
[FIX] Welcome Message: Add l10n tags and appropriate LESS variables
[FIX] Register: l10n fixes
[FIX] Register: learn more link
Merge pull request #1365 from vhpoet/task/optimize

[TASK] Optimizations
Merge pull request #1362 from ripplelabsben/landingpage

[FEATURE] Register: Welcome message
Bump version to 1.0.2
[TEST] fix tests
Merge pull request #1366 from vhpoet/develop

[TEST] fix tests
[FEATURE] Add SVG pie chart on balance page
[FEATURE] Fetch actual date from RippleCharts