v0.5.1.1229

Features / Improvements:

• User Avatar (Only support Gravatar for now)

Bug Fixes:

• Fix: The second quarter grade should be calculated separately from the first.
• Fix grading weight caching issues when the calculated grade equals the actual grade but with different weighting.
• Fix possible NaN for course grade calculations, which resulted in lower than actual calculated GPAs.
• Fix scatter plot, pie and radar charts tooltip display issue.
• Fix many login issues caused by old version cookies.
  • Expected BEGIN_OBJECT but was STRING
  • Exception: JsonObject and JsonNull