Delete old TODOs related to v2 switchover

Delete some old TODO comments that are obsolete now that the default
cartridge model has been changed to v2.
<node-proxy,port-proxy> Bug 964212 - Fix init script dependencies

https://bugzilla.redhat.com/show_bug.cgi?id=964212

Add INIT INFO to node-proxy and port-proxy to make sure required
services are started before init scripts are called during startup

Fix references to port-proxy in node-proxy init script
online_runtime_296 - No longer need to move the throttle tag.
Bug 964347 - Run cartridge scripts from cartridge home directory

* Refactored platform code to run cartridge scripts from cartridge home directory
* Added missing step in mongodb cucumber tests
Merge pull request #2583 from Miciah/drop-todo-for-v2-switchover

Merged by openshift-bot
fix to call correct script.
Fix for bug 959976
Merge pull request #2591 from detiber/bz964212

Merged by openshift-bot
Merge pull request #2617 from rmillner/online_runtime_296

Merged by openshift-bot
Merge pull request #2612 from jwhonce/bug/964347

Merged by openshift-bot
Merge pull request #2622 from mrunalp/bugs/haproxy_validate_config

Merged by openshift-bot
Bug 966759 - Ensure mappings start with /

* If cartridge authors forget the leading / on mappings, add it
Merge pull request #2621 from abhgupta/abhgupta-dev

Merged by openshift-bot
Don't remove files while the app is still running before the user is destroyed.
Bug 966758 - Disconnect frontend mappings when removing catridge

* platform failed to disconnect frontend mappings when cartridge was
  removed from the gear
remove install build required for non buildable carts
Merge pull request #2628 from jwhonce/bug/966758

Merged by openshift-bot
Merge pull request #2625 from jwhonce/bug/966759

Merged by openshift-bot
Merge pull request #2627 from danmcp/master

Merged by openshift-bot
Bug 965317 - Add way to patch File class so all files have sync enabled.