token warnings

[owocki]

Description

warns the user upon posting a bounty if their approve() is not enough

Refers/Fixes

https://gitcoincore.slack.com/archives/CAXQ7PT60/p1560434810014200

Testing

still need to test more
probably also need to tell the user if theres not enough balance.

[thelostone-mc]

@octavioamu isn't this already fixed in #4742 ?

[codecov]

Codecov Report

Merging #4639 into master will increase coverage by 1.25%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #4639      +/-   ##
==========================================
+ Coverage   30.42%   31.67%   +1.25%     
==========================================
  Files         216      213       -3     
  Lines       17276    19423    +2147     
  Branches     2345     2992     +647     
==========================================
+ Hits         5256     6152     +896     
- Misses      11811    13013    +1202     
- Partials      209      258      +49

Impacted Files	Coverage Δ
app/marketing/management/commands/sync_mail.py	0% <0%> (-29.17%)	⬇️
app/grants/templatetags/grants_extra.py	71.42% <0%> (-28.58%)	⬇️
app/dashboard/router.py	27.83% <0%> (-6.83%)	⬇️
app/marketing/mails.py	11.52% <0%> (-1.33%)	⬇️
app/economy/models.py	58% <0%> (-0.42%)	⬇️
app/dataviz/views.py	8.82% <0%> (-0.33%)	⬇️
app/grants/views.py	13.71% <0%> (-0.18%)	⬇️
app/app/settings.py	78.65% <0%> (-0.16%)	⬇️
app/retail/utils.py	10.31% <0%> (-0.03%)	⬇️
app/marketing/views.py	12% <0%> (-0.03%)	⬇️
... and 21 more

---

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[codecov]

Codecov Report

Merging #4639 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #4639   +/-   ##
=======================================
  Coverage   30.42%   30.42%           
=======================================
  Files         216      216           
  Lines       17276    17276           
  Branches     2345     2345           
=======================================
  Hits         5256     5256           
  Misses      11811    11811           
  Partials      209      209

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update be24ebc...fef373b. Read the comment docs.