Fix error when page_robots is executed outside a request

[coveralls]

Coverage remained the same at 100.0% when pulling 9566f2c8443796bda3afee890281a7e6282e80ac on hotfix/robots-tag-request-0-4 into 3b15978e97fbc0de9385cb8c7b54883e3fadb798 on release/0.4.x.

[coveralls]

Coverage decreased (-1.3%) to 98.75% when pulling 486affdca6ec15541e4cee1ade62550445c502e2 on hotfix/robots-tag-request-0-4 into 3b15978e97fbc0de9385cb8c7b54883e3fadb798 on release/0.4.x.

[codecov[bot]]

Codecov Report

Merging #39 into release/0.4.x will decrease coverage by 1.25%. The diff coverage is 66.66%.

@@                Coverage Diff                @@
##           release/0.4.x      #39      +/-   ##
=================================================
- Coverage            100%   98.74%   -1.26%     
=================================================
  Files                  7        7              
  Lines                154      159       +5     
  Branches              17       18       +1     
=================================================
+ Hits                 154      157       +3     
- Misses                 0        2       +2

Impacted Files	Coverage Δ
...jangocms_page_sitemap/templatetags/robots_index.py	94.59% <66.66%> (-5.41%)	:arrow_down:

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[codecov[bot]]

Codecov Report

Merging #39 into release/0.4.x will decrease coverage by 1.25%. The diff coverage is 66.66%.

@@                Coverage Diff                @@
##           release/0.4.x      #39      +/-   ##
=================================================
- Coverage            100%   98.74%   -1.26%     
=================================================
  Files                  7        7              
  Lines                154      159       +5     
  Branches              17       18       +1     
=================================================
+ Hits                 154      157       +3     
- Misses                 0        2       +2

Impacted Files	Coverage Δ
...jangocms_page_sitemap/templatetags/robots_index.py	94.59% <66.66%> (-5.41%)	:arrow_down:

---

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 3b15978...486affd. Read the comment docs.

[codecov[bot]]

Codecov Report

Merging #39 into release/0.4.x will decrease coverage by 1.25%. The diff coverage is 66.66%.

@@                Coverage Diff                @@
##           release/0.4.x      #39      +/-   ##
=================================================
- Coverage            100%   98.74%   -1.26%     
=================================================
  Files                  7        7              
  Lines                154      159       +5     
  Branches              17       18       +1     
=================================================
+ Hits                 154      157       +3     
- Misses                 0        2       +2

Impacted Files	Coverage Δ
...jangocms_page_sitemap/templatetags/robots_index.py	94.59% <66.66%> (-5.41%)	:arrow_down:

---

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 3b15978...486affd. Read the comment docs.

[codecov[bot]]

Codecov Report

Merging #39 into release/0.4.x will not change coverage. The diff coverage is 100%.

@@             Coverage Diff              @@
##           release/0.4.x    #39   +/-   ##
============================================
  Coverage            100%   100%           
============================================
  Files                  7      7           
  Lines                154    159    +5     
  Branches              17     18    +1     
============================================
+ Hits                 154    159    +5

Impacted Files	Coverage Δ
...jangocms_page_sitemap/templatetags/robots_index.py	100% <100%> (ø)	: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 3b15978...9566f2c. Read the comment docs.