Drop trailing slash from api get and delete args

[soulshake]

Dumbest, tiniest PR ever, but i keep typoing it and it bugs me. (Feel free to reject.)

Before:

$ /usr/local/bin/convox api get /apps/
ERROR: response status: 404 404 page not found

After:

$ convox api get /apps/
[
  {
    "name": "cv-soulshake-net",
    "release": "RRANZYKRPSM",
    "status": "running"
  },
  {
    "name": "trainingwheels",
    "release": "",
    "status": "running"
  }
]

[codecov]

Codecov Report

Merging #2078 into master will increase coverage by 0.02%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master    #2078      +/-   ##
==========================================
+ Coverage    30.7%   30.73%   +0.02%     
==========================================
  Files         143      143              
  Lines       14342    14344       +2     
==========================================
+ Hits         4404     4408       +4     
+ Misses       9482     9481       -1     
+ Partials      456      455       -1

Impacted Files	Coverage Δ
cmd/convox/api.go	39.34% <0%> (-1.34%)	⬇️
cmd/convox/stdcli/stdcli.go	38.77% <0%> (+1.53%)	⬆️
api/models/cronjob.go	86.2% <0%> (+3.44%)	⬆️

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[soulshake]

Document CF Events in app and rack logs

[soulshake]

Drop trailing slash from api get and delete args

[MiguelMoll]

Should read TestApiTrailingSlash and a different comment of what it's really testing.

[soulshake]

Whoops, thanks