Fixed minor issues and added query by status option

[codecov-io]

Codecov Report

Merging #105 into master will increase coverage by 0.48%. The diff coverage is 99.09%.

@@            Coverage Diff             @@
##           master     #105      +/-   ##
==========================================
+ Coverage   92.96%   93.44%   +0.48%     
==========================================
  Files          49       49              
  Lines        1776     1847      +71     
==========================================
+ Hits         1651     1726      +75     
+ Misses        125      121       -4

Impacted Files	Coverage Δ
flocx_market/api/app.py	100% <ø> (ø)	:arrow_up:
flocx_market/api/offer_contract_relationship.py	95% <100%> (+12.24%)	:arrow_up:
flocx_market/tests/unit/db/sqlalchemy/test_api.py	100% <100%> (ø)	:arrow_up:
...objects/test_object_offer_contract_relationship.py	100% <100%> (ø)	:arrow_up:
...locx_market/objects/offer_contract_relationship.py	100% <100%> (+3.33%)	:arrow_up:
...s/unit/api/test_app_offer_contract_relationship.py	100% <100%> (ø)	:arrow_up:
flocx_market/db/sqlalchemy/api.py	95.7% <92.3%> (+0.02%)	:arrow_up:

---

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 8d7ae0a...c4bf7c8. Read the comment docs.