Update link to system applications on the zerostate page

[bryk]

• previosuly it was a multiline link -> changed this to text and lint
• changed wording to not expose our internal implementation details`

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This change is

[bryk]

@taimir @gertipoppel Can you review this?

[codecov-io]

Current coverage is 86.54%

Merging #558 into master will not affect coverage as of f15d8b0

@@            master    #558   diff @@
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  Files           97      97       
  Stmts          847     847       
  Branches         0       0       
  Methods          0       0       
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  Hit            733     733       
  Partial          0       0       
  Missed         114     114       

Review entire Coverage Diff as of f15d8b0

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[taimir]

Review status: 0 of 1 files reviewed at latest revision, 1 unresolved discussion.

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src/app/frontend/replicationcontrollerlist/zerostate/zerostate.html, line 41 [r1] (raw file):
I like this better than the previous text. Let me check how it looks on internet explorer :)

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Comments from the review on Reviewable.io

[taimir]

Reviewed 1 of 1 files at r1.
Review status: all files reviewed at latest revision, all discussions resolved.

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Comments from the review on Reviewable.io

[taimir]

LGTM